The G1 is built around a model of openness, enabling developers to create applications — software programs, called “apps” for short — that will succeed or fail according to the feedback from the online community. Naturally, these community-contributed programs need a marketplace where G1 users can find them, and the Android Market provides just that.

This week, I installed various applications from the Android Market on a G1 and tested them out. Google (GOOG) says it will launch with around 40 to 50 applications in this virtual store, and these and all other apps will be available free of charge from now until at least the start of next year.

BreadCrumbz makes maps.

I found these apps to be useful, entertaining and mostly straightforward. There were a few that I felt tried to jam too much into one application, such as BreadCrumbz, an app that asks users to add pictures, instructional arrows and labels to maps that they make for friends. Other apps kept it short and sweet, like Wi-Fi Toggle — a one-touch button that turns wireless capability on or off to save battery power.

The G1’s apps are more utilitarian than most apps I’ve tested for Apple’s iPhone — and not quite as visually pleasing. I even compared one G1 program, Plusmo College Football, directly with the same app running on the iPhone, and I missed the artsy touches of the Apple (AAPL) version — like menus that flipped 180 degrees when selected rather than simply opening.

One downside: Only a measly 70 megabytes of internal flash memory are reserved on the G1 for storing these third-party applications. Once you fill that limited internal storage space, you have to delete some of your apps to add more. You can’t currently store apps on the phone’s roomier removable memory card. (A one-gigabyte microSD comes with the G1.) The iPhone doesn’t set such an arbitrary limit on application-storage space. The Android Market, like Apple’s iTunes, keeps a record of each user’s installed apps so they can be easily downloaded again later at no extra charge (if they carried a fee). But, unlike the iPhone, the G1 can’t back up your apps to a PC or Mac.

The G1’s open model means extra setup steps during app installation. For example, if an application will access certain information — such as a user’s Internet connection, location data (as identified by GPS) or other personal information (calendar, contacts, etc.) — warnings appear during installation, and the user must grant permission. In addition, many apps come with license agreements that must be okayed before users can continue. If something goes wrong with an app, people can post complaints on community boards or email developers, whose email addresses appear during installation.

The Android Market home page.

To offer a general idea of what’s available, I’ve highlighted a handful of apps that I like. I broke the applications into three groups: Functional, Fun (if occasionally kitschy) and Frills.

Functional

Wi-Fi Toggle: This does what it says. Once installed, it adds an icon to the G1’s desktop that provides a quick way to turn Wi-Fi on and off without digging into the settings menu.

Locale: Like Wi-Fi Toggle on steroids, this app allows a user to set up a G1 so it dynamically changes its settings in specific conditions. The settings can respond to calls from certain people or changes in the phone’s battery power, calendar, the user’s location or the time. For instance, the Wi-Fi can automatically turn off, ringer volume can go up or down, desktop wallpaper can change or a post can be sent. Just think of all the churchgoers who could ensure their cellphone ringers are turned off on Sunday mornings or when the church’s location is sensed.

Ringdroid: Make ringtones from your own songs by adjusting bars to mark the start and end of each ringtone. Hitting Save automatically keeps the ringtone, labeled with the song’s name by default, for use on the phone.

Video Player: The G1 doesn’t have a built-in way to play videos, and this app does the trick in a clear-cut, reliable way.

Fun

Movie ShowTimes: This lets people use a finger to flick across the G1’s touch screen to page through movie poster images, titles and brief descriptions. Below each movie description, an on-screen button labeled “Showtimes Near You” uses GPS to generate lists of nearby movie times.

Pac-Man: The classic arcade game never gets old. You can move Pac-Man through his maze with one of three methods: tilting the G1 so its accelerometer moves the Pac-Man, swiping with a finger to point Pac-Man in the right direction or using the trackball to move him around the screen. I preferred the trackball.

Cooking Capsules: This program demonstrates food-making without being either too intimidating or too dull and simplified. Though there were only six “capsules” when I tested it, each includes steps for watching (an instructional video), shopping (using an on-screen list of items) and cooking (with numbered instructions on how to cook the food).

Bonsai Blast is a gaming app that’s now available for the G1.

Bonsai Blast: This colorful, Asian-themed game directs people to shoot colorful marbles at other chains of marbles, with a goal of getting three matching marbles lined up beside one another so they’ll disappear.

Krystle II: Turns your G1’s entire screen into a picture of fur that purrs and vibrates as you touch it. There’s no real point, but Krystle II is addictive and strangely comforting during long conference calls.

Frills

Ecorio: This well-intended app aims to track users’ travel carbon footprints in order to make them more responsible for the environment. It asks users to enter things like recent transit routes and carpools and suggests ways to reduce and offset people’s footprints.

Maverick: An IM program that allows people to add scribbles, location data or even photos to active instant-messaging conversations. Maverick signs users into Google Talk and Picasa simultaneously, adding IM images into an auto-generated Picasa album for later viewing.

PicSay: Add word balloons, titles, props and effects to digital photos captured and/or stored on the G1, then send the images via multimedia messaging service or email, or save one as a caller ID.

There are many more G1 apps to try, and developers are expected to keep making them for this new device. As with the iPhone, apps obtained for the G1 from the Android Market enable it to morph into a different device with different tools every day.

– Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find this and other columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

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Meanwhile, Microsoft’s Zune announced via press release that new players in different capacities and colors would be available this week, along with a software update.

Despite their different approaches, these two announcements shared a notable common thread: integrated music discovery. Each company’s new software features ways for users to find automatically generated suggestions of music they might like, the way Pandora Media Inc.’s popular personalized music lists do. Of course, music discovery also encourages users to buy more.

Apple’s new iPods include a thinner Nano with an accelerometer, which senses the direction a screen is being held in a user’s hands and flips the display horizontally or vertically. These Nanos come in eight- or 16-gigabyte versions for $149 or $199 and are available in nine bright colors. A new, thinner iPod Touch with a built-in speaker was also unveiled, and it comes in eight-, 16- or 32-gigabyte versions for $229, $299 or $399.

Microsoft’s two new Zune players come in 16- and 120-gigabyte capacities for $200 and $250, respectively. All Zunes have built-in FM tuners and wireless capability, but the new upgrade allows users to buy and download songs they hear on their Zunes’ radios via Wi-Fi, when available.

While Apple’s iPod has been a snowballing success for the company, its companion iTunes software is no slouch. To date, 65 million iTunes store accounts with associated credit cards have been set up on Macs and Windows PCs. But iTunes has always been weak on music discovery and community.

Apple (AAPL) calls iTunes 8’s ability to make smart music recommendations the “Genius” feature. The tool can automatically do two things after analyzing a selected song from your music library. First, it can generate a playlist of songs from tunes you own. Second, it can generate a list of songs you don’t own but might want to buy from the iTunes store.

MicrosoftZune’s Mixview feature displays content related to an artist with an explanation of the relationship.

Microsoft’s Zune software discovers and recommends music using categories called “Picks,” “Channels” and “Mixview.” The last of the three, Mixview, generates recommendations for other musicians and albums, as well as other Zune users with whom you might like to connect. The suggestions are based on the artist of the song you’re playing and are displayed in an interactive graphic that explains how each is linked — for instance, if your artist was influenced by a band or if a member of Zune’s social network is a top listener of the artist you’re playing.

After using the music-discovery software from Apple and Microsoft (MSFT), I felt like Apple’s Genius tool still had a lot to learn, though the company says it will improve over time as more people start using it. Zune’s software had some similar issues, but it offered recommendations in a richer, more engaging manner, encouraging me to keep digging around and learn more about my music. Though I didn’t happen to have as much time to use Zune’s software as I did Apple’s Genius, I got more out of my Zune experience.

Apple offers much more content at its iTunes store than Zune. In all categories, iTunes takes the lead: in songs, 8.5 million songs to Zune’s 4 million; in music videos, 10,000 versus 8,500; in television episodes, 30,000 versus 3,000; and in audio and video podcasts, 125,000 versus 6,000.

To analyze and learn from your music, Apple scans the contents of your music library, which may raise privacy concerns for some people. Apple says that the information it collects is completely anonymous, and that it does not and will not associate this information on its servers with you or your account.

Some of my Genius playlists were well-crafted, including songs that meshed well with one another. But outliers cropped up, such as when “Should I Stay or Should I Go” by the Clash was stuck in the middle of a list generated from Coldplay’s gentler ballad, “Green Eyes.” Some songs won’t generate playlists if you don’t have enough related songs in your library; this happened to me with the pop hit “Apologize” by Timbaland, featuring OneRepublic.

Songs from artists whose content isn’t sold in iTunes, such as The Beatles, won’t generate Genius lists, because Genius makes suggestions based only on what it sells in its iTunes catalog. Genius will soon work with songs beyond those sold in iTunes.

Genius has a bigger problem. If you hit “Play” in iTunes, a Genius sidebar appears to offer content related to a selected song. But as play continues, Genius doesn’t continuously generate new recommendations; instead, it’s stuck on the very first song that was selected — which you might have chosen two hours ago. This means music discovery must be a manual process, rather than an as-you-listen convenience.

Genius playlists can be made on a computer or iPod and sync back and forth. I synced Genius lists on two iPod touches, but this didn’t work in one test with an iPhone. Apple said it couldn’t replicate this problem and hadn’t had other reports of it.

Zune software never scans your music collection. Instead, it knows only the number of times you played a song and how you may have rated a song.

Zune’s Mixview adds a real zing to the discovery process. It is a kaleidoscope-like graphic that appears on the screen when a song, artist, album or friend’s Zune Card is selected. The selected item is surrounded by eight to 10 floating squares filled with graphics and text, each holding a related song, album, artist or graphic representation of a Zune listener who’s considered an “expert” on the selection.

Each of these related squares includes a line of text explaining its relationship to the center item. For example, as I played “(I Can’t Get No) Satisfaction” by the Rolling Stones, Cyril Davies appeared as a related artist; an image of Arthur Alexander appeared as an influencer of the Stones; a Zune community member with the tag “Rreynoso” appeared as the top listener for the band and other Stones albums were displayed.

Mixview changes as you explore it. When one of its recommendations is selected, a new Mixview is created around that selection, encouraging discovery. But Mixview has the same problem as Apple’s Genius: When one song ends and another begins, the Mixview graphic doesn’t automatically change; you must manually start Mixview for a new song. Zune says it doesn’t want to change the graphic in case a user is in mid-exploration.

Unlike Genius, Mixview shows songs and artists beyond what Zune sells online. But the company says Mixview does “favor” Zune content, and Zune Picks are limited to items sold by Zune.

Zune Picks and Channels are more passive ways of discovering music: Picks are generated for you in Zune Marketplace according to your listening habits. Zune Channels bring collections of music to Zune devices and software, but these are useful only for Zune Pass members who pay $15 monthly.

Apple’s Genius is a helpful tool when it comes to quickly making a playlist, and its iTunes sidebar might reveal fresh related content. But the Zune software truly allows people to discover more about their own music and that of others.

Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find this and other columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

But to the style-conscious set, the Flip looked like a clunky Fisher-Price toy — especially when compared with a sleek, new iPod or more-sophisticated digital cameras — and was too thick to comfortably slip into a pocket. Last fall, Pure Digital introduced an enhanced version: the Flip Video Ultra, but its biggest aesthetic difference was new orange, pink and green colors.

Today, the company will begin sales of its $180 Flip Video Mino (pronounced “minnow”), the hippest offering yet from Pure Digital. This 60-minute Flip includes many firsts for the company: rechargeable batteries; touch-sensitive buttons rather than old-school, push-down buttons; and a thinner build that measures 40% smaller, overall. The Flip Mino is also the first one in the family to enable publishing to MySpace (NWS); prior software limited Web-site sharing to YouTube (GOOG) and AOL (TWX) Video.

I’ve been using a glossy, black Flip Mino (it also comes in white) for the past two weeks and it looks much cooler than older models. Its newly positioned USB adapter pops up from the top of the camera like something from a Swiss Army Knife. The Mino offers features such as the ability to lock the delete button, so no one accidentally deletes your videos, and mute all camera sounds, so as to record silently during quiet moments like wedding ceremonies or speeches.

I brought it along with me almost everywhere I went because of its small size and light weight, even fitting it into a thin clutch purse with a cellphone and BlackBerry (RIMM). I used the Mino in various situations ranging from bright, scenic outdoor settings to indoors while eating dinner in a candle-lit restaurant. Overall, I was pleased with the sound and picture quality of the Mino, and I found its built-in software, which automatically starts when the camera plugs into your Mac (AAPL) or Windows (MSFT) PC, to be a pleasure to use.

Today, Pure Digital Technologies introduced its $180 Flip Video Mino, a thinner, more stylish version of its point-and-shoot camcorder.

It took just a few minutes to trim excess footage from my videos before saving them to my computer or sharing them with friends and family. Another way to share videos from the Flip Mino is via Pure Digital’s server, which sends emails with embedded video links, saving upload and download time on both ends. Though I didn’t publish any of my videos on a public Web site, AOL, MySpace and YouTube were just one step away.

The Flip Mino’s touch buttons, while stylish, were difficult to use at first. I missed the tactile feel of physical buttons as I tried to hold this small video camera and press the zoom buttons using just one hand. The new, touch-sensitive buttons weren’t as satisfying and stable to use, and I pressed them accidentally more than a few times. For instance, the Zoom Out button is directly below Record, making it easy to mistakenly touch it. After about a week of using the Mino, I grew more accustomed to using these new touch buttons, but it shouldn’t take so long to make the adjustment.

Just looking at the Flip Mino’s fresh new exterior makes it hard not to think about the things that this redesigned camcorder is still lacking, like a larger viewing screen (the Mino screen is 1.5 inches, no larger than that of the Flip Ultra), high definition video and wireless sharing capability. These features would likely raise the price and/or tax the battery, and many users of the Flip flock to it for its low price and simplicity. Still, Pure Digital says that it will offer HD video and a larger screen on a product within a year, and is looking into features that might include wireless transferring.

I grew fond of the Mino’s rechargeable battery. Whenever I plugged this gadget into my computer to transfer videos, my Mino charged up via USB without me having to think about it. A full charge lasts four hours and recharging a dead battery takes about three hours.

Pure Digital says that the sound quality and lighting are improved in this model. Like previous models, this Flip records in 640×480 pixels at 30 frames per second.

The Mino didn’t have a problem with lighting in most situations; indeed it did a nice job of capturing images of my family sitting around a table in a restaurant with little more than candlelight to brighten the picture. It doesn’t use a flash or a built-in light, but instead uses automatic sensors to adjust to various levels of light.

This svelte camcorder seemed to handle noise more evenly than I remembered in prior Flip models. It didn’t make my voice sound unbearably louder than everyone else’s, even though I was closest to the camera’s microphone, yet it managed to detect voices across the room. I did have some trouble on a windy day: While recording a quick video of a golf course in San Diego, wind audibly muffled my voice during a few moments in the video.

Along with the delete-lock and sounds-off settings, this Mino has a few other tricks up its sleeve. Each of the touch-sensitive buttons is designed to glow only when usable, so as to better help people who might not know which buttons to press while using this camcorder. For example, only the zoom buttons glow while recording since the other buttons (volume, play/pause and delete) can’t function in this setting.

Shortcuts built into each button provide more functions: Holding the play/pause button down will set the playback mode to play all videos on the Mino; holding the seek ahead or seek back buttons while watching a video will fast-forward by seconds within that video; pressing the record button as the camera starts up opens up the settings menu.

In conjunction with the Flip Mino’s introduction Wednesday, prices of the former Flip Ultra model will drop to $150 for the 60-minute model. The Flip Ultra 30-minute model will be phased out, as will the Flip Classic, which will cost $130 for a 60-minute unit.

Though the Flip Mino’s touch-sensitive buttons look great, they aren’t as functional as they needed to be. But if you really want a sleek, hip-looking gadget, you’ll learn to adjust to these new buttons. No matter which Flip you choose, Pure Digital’s software changes the way people capture and share videos, and that’s a great thing.

Edited by Walter S. Mossberg

• Email mossbergsolution@wsj.com

But several companies now sell wireless mice designed especially for laptop users for whom the laptop touch pad just won’t do. These mice are small, sleek, colorful gadgets that more fashion-conscious computer users can happily show off in an airport, in a coffee shop or on campus.

See a chart comparing the three mice

This week I tested three entry-level mobile mice designed for laptops, from Logitech (LOGI), Microsoft (MSFT) and Kensington Computer Products Group. These $30 mice include a USB receiver that plugs into a laptop, allowing the mouse to work wirelessly. When not in use, this receiver fits snugly beneath the mouse, turning its power off to save battery as it snaps into place. These mice are also somewhat smaller than regular mice so they can easily slip into a laptop bag.

Mobile mice are now more stylish than the traditional desktop mice, and like laptops and digital cameras, come in various shapes and colors. The mice I tested are available in pink, white, red, blue, orange and gray. Next week, the Microsoft mouse I used will be available in shades of pomegranate, aloe, dragon fruit (dark pink) and milk chocolate; a khaki-colored shade called crème brûlée will follow in June.

I tried Logitech’s $30 V220 Cordless Optical Mouse in black, Microsoft’s $30 Wireless Notebook Optical Mouse 3000 in aloe, and Kensington’s $35 Ci75m Wireless Notebook Mouse in orange. To gain some perspective on high-end mobile mice, I also looked at two pricier options from Logitech: the $50 V470 Cordless Laser Mouse with Bluetooth (instead of a USB receiver) and the $70 VX Nano Cordless Laser Mouse.

My vote for a favorite low-end mobile mouse had me struggling between portability and comfort. But overall, I found that the Logitech V220 offered the best combination of small size and usability. The Microsoft mouse was also comfortable to use, but its slightly bulkier size made it less portable, and it didn’t feel as sturdy as the Logitech. While the Kensington was the flattest and most portable, it wasn’t as comfortable to use as the Logitech or Microsoft mice.

To conserve battery, all three of these mice go into low-power mode after 10 minutes of nonuse, but none of them turns off completely. Battery indicators light up when juice is running low. According to company estimates, the Microsoft mouse has a battery life of over six months and the Logitech mouse has a battery life of up to six months. The Kensington mouse’s battery life was estimated to be three months. I didn’t use any of them long enough to prove the company claims.

These mice are compatible with Macs and PCs, and are plug-and-play — meaning you don’t need to install any additional software to make them work. I used each on laptops running Mac OS X and Windows Vista without any problems. The Microsoft and Logitech mice also can work with their own special software programs, but the extra features, such as reassigning a mouse button to open an application, aren’t really necessary for the average user.

The $30 Logitech V220 fit comfortably in my hand, with rubber grips on its sides and a generously sized, smooth-gliding rubber scroll wheel that made it easy to use. This scroll wheel can be nudged to the left or right for horizontal scrolling, a feature found on most of Logitech’s mice.

Unlike the Microsoft and Kensington mice, which show flashing red sensor lights, the Logitech uses an invisible optic sensor. This sounds cool, but because the mouse doesn’t use any lights, it can be left on accidentally. I did this a few times before remembering to stow the USB receiver in the mouse to automatically turn off its power.

Of the three, the Logitech mouse was the only one with a manual on/off switch — so you can turn it off without snapping the USB receiver into place in the mouse. This could save frequent travelers from having to detach the USB receiver every time they want to turn off the mouse, and could let people keep the receiver plugged into the laptop.

Kensington’s $35 Ci75m was the flattest mouse by far, making it a cinch to slip it into the outside pocket of my already full laptop bag on a train trip to New York. And this mouse has a bonus feature: It can work wirelessly or with a USB wire, which wraps up inside the mouse and serves as a backup in case the mouse runs out of battery. I tested this by removing the batteries and using only the USB wire, and it worked like a charm.

I also liked the way the Kensington USB receiver disappeared into the body of the mouse, while the Microsoft and Logitech receivers protruded a bit when stowed, adding to the thickness of the mouse when tucked into a laptop pocket.

But though this bright orange mouse received approving feedback from passersby, it wasn’t all that comfortable to use after a while. Its flatness saved room in my bag, but didn’t give my hand much support. It also felt flimsier than the Logitech, and its small wheel wasn’t as satisfying to use.

I received early test units of Microsoft’s $30 Wireless Notebook Optical Mouse 3000 in aloe, pomegranate and milk chocolate.

This mouse has rubber sides for a better grip, like the Logitech, and an arched shape for comfort. Its wheel is slightly smaller than Logitech’s, though its overall size was bigger and more like that of a regular mouse — not one designed specifically for mobile use. But even though the Microsoft mouse was larger, it didn’t feel as solid as Logitech’s; rather, it felt more like the thin Kensington. Its right and left buttons felt less stable, and its wheel didn’t roll as smoothly.

I did like Microsoft’s nod to new colors, and the aloe — a cool hue of green — was my favorite.

For people who don’t mind spending a little extra money on a mouse, the $50 V470 Cordless Laser uses Bluetooth, eliminating the need for a USB receiver altogether. It took only a couple seconds to pair this mouse to a MacBook with built-in Bluetooth, and it worked smoothly. A manual on/off switch on this mouse’s underside can help to conserve battery.

The $70 Logitech VX Nano Cordless Laser is sleek with shiny black accents and a silver-edged wheel. The “Nano” in this mouse’s name refers to its ultra tiny USB receiver, which sticks out only about a quarter of an inch when plugged in, so it can be left in a laptop at all times for ease-of-use. If needed, this receiver can be hidden away in the cavity of the mouse, under a snap-on lid. I used the VX Nano to glide around Web pages and Word documents with buttery smoothness.

No matter what mouse you choose to use with your laptop, most will be considerably more comfortable than touch pads and trackpoints, especially while working on long, mouse-intensive projects. But of the three lower-end mobile mice, the Logitech V220 Cordless Optical Mouse delivers the best combination of comfort and transportability.

The chart below (click on it to make it larger) compares features of the three mice described in this column.

Email mossbergsolution@wsj.com

To make Bluetooth even easier to use in cars, most new luxury cars and some standard cars are sold with optional built-in Bluetooth speakerphone technology which doesn’t even require an earpiece. Some cars also come with built-in iPod integration, displaying song titles on the dashboard and controlling the iPod using buttons on the steering wheel, again to minimize distractions. One new built-in product, SYNC, the voice-activated system created by Ford Motor Co. and Microsoft Corp., lets users do both things hands-free: play music or make phone calls using simple voice commands.

The $120 Parrot PMK5800 uses voice recognition for a more hands-free experience.

This week, I tested two devices that bring Bluetooth technology to older cars in hopes of integrating hands-free phone calls and music with a car’s stereo system. I tried the $130 Venturi Mini from NextGen Venturi Ltd. (www.myventuri.com) and $120 Parrot PMK5800 from Parrot Inc. (www.parrot.com) on three cars made in 2000 and 2005.

Neither device offers a surefire solution; each is limited by your particular car and cellphone. But the Parrot sails ahead of the Venturi Mini by using voice activation for phone calls, something the Venturi Mini can’t do. Venturi’s version of “hands-free calling” requires initiating a call on the cellphone itself or by looking down at a tiny, grayscale screen and painstakingly scrolling through names of contacts. Furthermore, the Parrot worked after only a few steps, while the Venturi took much longer to set up and get going.

Both of these are one-piece black gadgets that plug into your car’s cigarette lighter and use FM transmitters to play on unused FM radio stations. Each has a tiny screen, though the Parrot screen is used solely to display the current station so as to match it with the radio. The idea is that after initially “pairing” a Bluetooth cellphone with one of these devices, the phone and device will automatically find each other whenever both are in the car and on, making calls easier and music a bit more hands-free.

The Parrot and Venturi Mini will only play music via Bluetooth using cellphones that have a technology called A2DP, which enables music streaming. More and more new cellphones have this technology, such as the Nokia 6555 that I used, but many — including Apple’s iPhone — don’t. Most people will play music by attaching an iPod or other portable music player to these devices using cables that come with them.

The $130 Venturi Mini doesn’t work with voice commands.

Neither the Venturi Mini nor the Parrot PMK5800 enable voice commands with music: songs streamed via Bluetooth are controlled using buttons on the devices, and music coming from a wired-attached player can only be operated using buttons on that player.

The Parrot isn’t as compact or as stylish as the Venturi Mini, but its best feature is unseen: built-in voice recognition software that guides you while using this device. If your cellphone has built-in voice-recognition software, which many do, you can plug in the Parrot and get started. Otherwise, contacts must be loaded on to the Parrot and assigned a voice tag. Large green and red buttons initiate or end phone calls, but speaking commands also works. A knob turns to different stations or can be pressed and turned for audible descriptions of menus. Three glowing Play/Pause, Skip Ahead and Skip Back buttons are easy to find without looking down so as to navigate through music.

While I was listening to music coming from one paired cellphone, my sister called me on another paired cellphone that I had forgotten I had in my purse. The music automatically paused, and the sound of a ringing phone came from the car speakers until I answered it by pressing the Parrot’s green button (speaking the word “phone” also works).

If voice tags are assigned to contacts in your phone, the name of the person calling can be announced over the speakers, like caller ID. Music automatically re-starts after a call ends.

I made calls on the Parrot by pressing its green button and speaking directions like “Call Allison Mobile” to call the correct number from my phone’s contact list. The voice recognition sounded a bit robotic, but almost always found the right number.

Most voice calls sounded rather clear to the people with whom I spoke, but in the car, calls suffered when stations were interrupted with static as I drove around the Washington, D.C., area. One major issue with relying on FM transmitters in major cities is the small number of unused radio stations. Static also affected streamed music, making it sound scratchy at times. Music playing from a cord-connected iPod had no trouble.

The same static problems arose with Bluetooth calls and music on the Venturi Mini. This device’s rectangular face has a scroll button in its center, which seems like it would be a useful addition. But this can’t be pressed down to select anything on the screen, which is maddening. Instead, selecting anything from the Venturi screen must be done using a separate button, as if it wasn’t even designed to be a hands-free device.

To set up the Mini, a paired phone’s contacts must be copied from the phone onto the device. Once these contacts are added, calls can be initiated through the device by finding the correct name on the screen using the scroll wheel and pressing more buttons to select that name and place the call. None of this involves voice recognition, and it’s all supposed to be done while you’re driving.

For all its faults, the Venturi does have a few features that the Parrot doesn’t, including the ability to display Bluetooth data — like the name or number of an incoming caller and a song title and artist — on your radio display if your car has this ability. But most older cars don’t allow this, and I couldn’t quickly figure out how it worked even while driving in a 2005 car. You can also charge devices through the Mini using a built-in USB port.

The position of a car’s cigarette lighter matters to the Venturi Mini and the Parrot. This plug is often positioned near the gear shift, and in my manual car, it would’ve been difficult to operate these gadgets while in fifth gear (I didn’t try). The location of this plug also determines how loud or soft your voice sound to callers. So as to not sound so far away during calls I tried to lean closer to the devices, but this isn’t safe while driving.

The Venturi Mini looks like a hip device, but without voice recognition software and a smart interface, it’s frustrating and dangerous to use. Parrot’s PMK5800 plugs in and works and its voice-recognition software makes it a true hands-free device that will improve the way you use Bluetooth in your car. Just look out for static, especially in big cities.

Edited by Walter S. Mossberg

Email mossbergsolution@wsj.com

Next time you get comfortable on the couch, remember that you’re relaxing in the consumer electronics battleground: the living room. Major tech companies are pouring resources into products they hope you’ll use to remotely receive your computer’s content — namely videos, music and photos — in a more comfortable place.

But while some of these complex solutions are still struggling to catch on, digital music marched steadily into the land of recliners long ago. IPods naturally plug into home stereos, multiplying music collections and bringing playlists to parties. And an industry of devices sprouted up specifically for playing iPods and other music players to a crowd.

This week, I tested a new version of one of these dock systems that specializes in wirelessly distributing music via small, cube-shaped speakers that can be spread throughout your house: the $300 Evolve speaker system from Griffin Technology Inc. (http://evolvespeakers.com). This setup offers a straightforward and stylish solution, delivering what I consider good quality sound.

Griffin Technology’s $299.99 Evolve is an affordable wireless speaker system.

Griffin’s attempt at claiming valuable real estate in the living room pits it against Sonos Inc., a high-end competitor that is already well-established in the wireless-music arena. Sonos sends digital tunes from your computers to up to 32 rooms using an attractive remote with a full-color screen. But this system starts at $1,000, not including speakers, and its computer-related set-up might intimidate potential buyers.

Closer competitors to Griffin’s Evolve can be found in Brookstone and Hammacher Schlemmer catalogs, where similar wireless speaker systems for the iPod are sold for $150 (on sale) and $400, respectively. Brookstone’s set-up includes small, spherical wireless speakers and Hammacher’s uses bulkier, rectangular-shaped wireless speakers with visible antenna.

I tested the Evolve system using my iPod touch and a first generation iPod nano bought in 2005. Both devices worked with the system, and the Evolve speakers connected wirelessly to the base station from up to 150 feet away on the digital 900MHz spectrum, which doesn’t interfere with Wi-Fi and works through walls and floors. Two speakers come with the system, each carrying a charge of 10 hours according to Griffin, though I got 11 in my tests.

Evolve has some downsides. While it’s great to know that its speakers work 150 feet away from the base station and iPod, they can only be controlled by the base station or by a remote control in view of the base station. So, if you and the speakers are in a room without the base station, you can’t see any information about the song that’s playing, nor can you adjust the volume. Each speaker does have its own power button.

And when I switched from my iPod touch to the iPod nano, the Evolve remote stopped working, and I couldn’t get the remote to work with my iPod touch again. Griffin acknowledged a bug that occurs with speaker systems when an iPod isn’t up to date with the latest firmware, which it wasn’t, and assured me that updating the device, unplugging and re-plugging the Evolve would fix the issue. These fixes didn’t help, nor did repairing the remote, and there wasn’t time for Griffin to send a new remote. I continued to use Evolve without the remote, but hope that other units won’t operate like mine.

Griffin’s Evolve base station seems to hover just inches off the ground and is made of a brushed aluminum. Left to right, it measures about 16 inches, and an iPod dock and three buttons mark the center of the base station. Two squat antenna stand behind this dock, and square wells on the left and right give the speakers a place to rest while charging. These wire-free charging wells are designed with overcharge/undercharge protection, so each speaker’s battery isn’t harmed by resting on the base station for a long period of time.

When the remote was working with my iPod touch, I navigated through songs from across the room, pausing and adjusting volume. I easily carried the speakers into my kitchen using handles built into the back of these cubes, and my roommate enjoyed listening to Amy Winehouse in stereo while she made dinner. But during the actual dinner, when we wanted to turn the volume down, we had to walk back to the living room where the base station was located while calling down the hall to one another to find out if the sound was low enough.

Hidden indicator lights in each speaker tell whether they’re charged or not; orange signifies a charge is needed, while green means you’re in the clear. A switch on the base station changes the speaker sound from mono (useful when listening to audio books) to stereo. Each speaker contains built-in technology that assigns it to automatically know if it’s right or left. To conserve battery, a speaker that’s turned on but isn’t playing music will turn off after 60 minutes.

I kept my speakers on for 11 hours straight before they pooped out, moving them to different floors and as far from the base station as possible — the signal stayed strong. In just two hours, the pair was recharged. I kept the volume pretty low for at least half the time my speakers were on, and Griffin says lower volumes conserve battery, and vice versa. I listened to all sorts of music, including hip-hop, jazz, country, rock and classical. I’m no audiophile, but to my ear, the Evolve handled each genre with aplomb.

All iPods (even the iPhone) work with Griffin’s Evolve, and this gadget will also work when connected to other MP3 players, stereos, TVs, and CD players, which could come in handy. In early March, Griffin will sell add-on speakers for $99 each with separate charging plates for $30 apiece; $200 bundles will include two speakers and two charging plates. There’s no limit to the number of speakers that you can add to a system.

Though Griffin’s Evolve lacks some of the luxuries that high-end systems have, it solves a problem with minimal effort on the user’s part, and looks good while doing it. If you don’t mind returning to the base station to make adjustments, and if your remote doesn’t stop working, you’ll enjoy this sleek and functional device.

• Email mossbergsolution@wsj.com

Corrections & Amplifications:

Griffin Technology Inc.’s Evolve wireless sound system uses a remote that can control certain functions of the iPod, even when it is out of sight of the base station. This column erroneously implies that the remote must be in view of the system to work.

Digital Cameras

Megapixels: This term describes the highest resolution photo a camera can take. Often mistaken as the most important factor in a digital camera, a high megapixel count — such as 10MP or more — isn’t necessary for the average user unless he or she plans on heavily editing or enlarging photos. Most new digicams offer between five and eight megapixels, which is usually more than enough.

Optical or Digital Zoom: Optical zoom, determined by the physical movement of a lens, matters much more than digital zoom, which digitally alters an image using the camera’s internal computer. Camera companies still try to confuse potential buyers by listing a camera’s total zoom, or the optical and digital zooms multiplied together. Ignore total zoom numbers and instead focus on optical, which now averages around 5x for many new cameras.

Image Stabilization: When generously sized LCD viewing screens started replacing optical viewfinders, they also forced users to hold their cameras at arm’s length, making for plenty of blurry photographs. To remedy this, camera manufacturers have added image stabilization, tools once found only in high-end SLR models. Optical (also called “mechanical”) and digital image stabilization correct for unsteady hands and moving subjects, respectively. Cameras with both types advertise dual image stabilization, which corrects for both situations and costs more.

Mobile Devices

HSDPA and EVDO: HSDPA, or High Speed Downlink Packet Access, is the name for AT&T’s 3G, or third generation, mobile network that operates at roughly the speed of a slower DSL in a home. HSDPA is available in most major metropolitan areas and is seen as the competitor to Verizon and Sprint’s EVDO (Evolution Data Only) networks, though the popular iPhone runs on AT&T’s network using Wi-Fi and EDGE technology rather than HSDPA.

Multi-Touch Technology: Most popularly found on Apple’s iPhone and iPod touch, multi-touch is starting to show up in other products, such as in Microsoft’s Surface, a coffee-table-like computer. Rather than just responding to on-screen touches, this technology enables moving, resizing and zooming pictures and Web pages using one or more fingers simultaneously. Look for many more devices — mobile and otherwise — to incorporate multi-touch in the future.

GPS: Global Positioning Systems are most often found in cars — either built-in or on portable devices from companies like Garmin and TomTom. These gadgets use satellite technology to determine geographic location, and high-end models even display Web content like news and weather along with directions. GPS integration in mobile devices can be used to plot routes in cars, can help users find nearby businesses while on the go and can link friends by showing one where the other is located and what they’re doing.

Digital Music

DRM: Digital rights management is a set of standards that protect the intellectual property rights of online content like music and videos, preventing it from being illegally distributed across the Web. In the past year, Vivendi’s Universal Music Group, Apple and (most recently) Sony BMG said they will start selling DRM-free versions of songs, often for a higher price. In Apple’s iTunes store, these files are called “iTunes Plus” and aren’t restricted like other iTunes content.

MP3: MP3 files are open, without any DRM restrictions. Files that you rip (copy) from your own CDs are usually converted into MP3s, though iTunes users can automatically rip tracks into that program’s special format, called AAC. MP3 files can be uploaded to social-networking sites for sharing with friends and online communities.

These file types are protected by rights that tie them to specific players. Generally, AAC files make up the majority of tracks sold on Apple’s iTunes store and play only on Apple’s iPods; WMA files are Microsoft’s version of proprietary files.

Wi-Fi

The popularity of Wireless Fidelity, or Wi-Fi, brings this technology to more and more portable devices like the iPod Touch and Microsoft Zune and gives companies good reason to incorporate Wi-Fi receivers in new computers — laptops and desktops alike. While available in many flavors, different letters like b, g, a and n stand behind Wi-Fi’s more technical name, 802.11, to help discern one version from another according to characteristics like speed and compatibility. The latest version, “n,” offers the greatest range and speed, and “n” devices are usually compatible with earlier versions.

Televisions

HDTV: High-definition television has now become the standard, capable of displaying vastly better pictures, provided the source is also HD. Today’s more popular flat panel HD televisions are LCDs, or liquid crystal displays, though plasmas still hold their own. Recording HD content can’t be done with a regular digital video recorder; instead, a special HD recorder is required to capture this higher quality content.

480p vs. 1080i vs. 720p vs. 1080p: These numbers refer to the resolution, or sharpness, of a digital display, while “p” stands for progressive and “i” stands for interlaced. A resolution of 480p, known as EDTV or Enhanced Definition TV, is found most often in low-end plasmas or LCD screens. A TV with a resolution of 1080p is currently considered the Holy Grail, and costs the most. But 1080p pictures usually can’t be distinguished from less expensive 1080i or 720p pictures by average viewers at the typical distances from which most folks watch TV.

Blu-ray vs. HD DVD: Blu-ray and HD DVD are incompatible high-definition disc formats that continue to fight a seemingly endless battle to replace the DVD. The Blu-ray camp is led by Sony and the HD DVD camp is led by Toshiba. The two formats aren’t so different, technically speaking, but their very existence is confusing to consumers. The recent decision made by Time Warner’s Warner Bros. to use Blu-ray gives Sony’s side a boost, and now Viacom’s Paramount is rumored to be switching to Blu-ray from HD DVD. Dual-format players from Samsung and LG offer some solace.

Email: mossbergsolution@wsj.com