TomTom GO 910 4-Inch Portable GPS Navigator

The GO 910's suction cup mount attaches quickly and easily to the windshield. View larger. You can also take the GO 910 product tour.

Detailed, pre-installed maps of the whole of Europe, the USA, and Canada offer seamless door-to-door navigation across half the globe. View larger.

The GO 910's intuitive interface and user-friendly touch-screen offer a great navigation experience. View larger.

When used with a compatible Bluetooth phone, the unit offers full hands-free functionality. View larger.

Optional TomTom Plus services offer safety camera warnings, real-time traffic and road condition information, and weather reports, as well as downloadable funny and famous voices. View larger.

Enjoy MP3s and Podcasts through the high quality speaker or via your car stereo. Load up image slideshows, too. View larger.

Weighing in at 12 ounces and measuring 4.2 x 3.1 x 2.5 inches, the GO 910 is about the size of a softball. TomTom is known for keeping things simple, and that's the case here; there are no buttons or other doodads on the front of the device -- just a big, bright widescreen (480 x 272 pixels) display that's controlled by touch. There's also a microphone for hands-free phone calls (more on this later) just above the display. A single button for power is placed on the top of the device, while a single speaker is placed on the bottom. There's a docking port here, too, which supplies power and data connectivity.

Installation
Installing the GO 910 couldn't be easier. A rotating suction cup mount attaches to the windshield and the GO 910 clips into it securely. Positioning the mount for easy viewing is a snap, and after some initial setup procedures you'll be up and running.

The mount accommodates an array of connections, including power, an external GPS antenna, an optional RDS-TMC traffic receiver for FM radio-based traffic updates, audio out, and a microphone connector. In addition to a car power adapter, The GO 910 ships with an external microphone for Bluetooth hands-free calls, as well as a 3.5 mm audio cable for connecting the unit to your car stereo.

While the GO 910 does have an internal rechargeable battery, it should be treated as a backup in most cases. Battery life was relatively short during testing--about 3 hours. The device also ships with a home USB docking cradle, as well as an AC wall charger. Using the included TomTom Home software on your PC, you can upload songs and photos to the GO 910, manage POIs, plan routes, purchase and manage additional TomTom services, and more.

Interface
The GO 910's easy-to-read display, logical menu and navigation functions, and excellent voice prompts bring the whole hardware and software package together nicely. You'll feel like you're using a tool intended for the job, not a piece of software cobbled together to run on generic hardware.

The anti-glare widescreen display offers a clear 3D view of the road and maneuvers ahead. The screen uses a built-in sensor to adjust to changing light conditions.

Pressing on a quadrant brings up one of three additional interfaces. The most important is the main menu, activated by pressing the map quadrant. This brings up a group of big, friendly icons that let you enter a new destination, find alternative routes, plan routes, enter the image gallery and music player, activate mobile phone functions, and check traffic conditions, among other features. Pressing the trip computer quadrant lets you delve deeper into your current route, allowing you to view a simulation of the complete route, text-based directions, and detailed map views of the roads ahead. Lastly, pressing the turn indicator brings up a volume control for voice prompts.

Small plus and minus symbols in the upper corners of the screen allow you to zoom in or out of the 3D map view. While the symbols could be a bit larger and more clear, the design is a tradeoff, as their size means they don't get in the way of map information. If you have traffic information engaged, whether via wireless data connectivity, or via an RDS-TMC traffic receiver, a small traffic icon appears on the right side of the screen, alerting you of traffic tie-ups ahead. A quick press of the traffic info button in the main menu allows you to find routes with fewer snags.

Voice prompting is clear, concise, and accurate, always delivering directions for the next maneuver at the right time. This is a testament to the accuracy of the GPS hardware; the device knows precisely where you are, giving it the uncanny ability to tell you what you need to know when you need to know it. You can even choose a voice that suits you best, male or female, with UK, US, or Australian accents. It's a nice touch.

On the Road
Once your home address is entered into the unit and the GPS receiver locks onto a few satellites, you're ready to roll. Initial satellite acquisition was quick and painless, taking no more than a minute. Entering a destination is fairly straightforward. You can enter an address using an on-screen text entry method, choose a stored or recent destination, pick a point on a map, enter latitude and longitude, or choose a POI that's stored in memory.

The first trip with the device included a visit to a friend's house, then a trip to the post office. I entered the friend's address and off I went. Following the voice prompts yielded an efficient route--the route I would choose on my own--and it incorporated several lesser-known streets and shortcuts. All in all, a great first run. The trip to the post office was less impressive. I searched for the nearest post office using the GO 910's handy POI search tool and was confident all was well until the device asked me to take a turn I knew was wrong. Eventually, the device delivered me to an abandoned warehouse that, while in the same neighborhood as the post office, was clearly not the right destination. The likely cause is that the GO 910's POI database has some outdated or inaccurate information. I did test some other POIs and these were accurate, however.

The only other gripe I had about the device was that there is no clear way to end a navigation session. If the unit is still on and you leave a destination, it will continuously try to direct you back to the location, even as you get further and further away from it! The solution to this is to enter a new destination every time you leave an old one, but that's not how people operate all the time. Of course, you can also simply turn the unit off. But it will go right back to guiding you to your old destination as soon as you fire it up again.

Extras
The GO 910 is designed to tightly integrate with many mobile phones that support the Bluetooth wireless communication standard. Once paired with your phone, you can use the GO 910 as a hands-free unit, with full dialing, speakerphone, and contacts management functionality. When paired with a Nokia E61, the GO 910 was able to fully control all call functions. Because of an incompatibility with the E61, though, it was unable to import the phone's contact list, making it necessary to set up an independent contacts list on the GO 910.

If you have wireless data service through your cellular carrier, the GO 910 takes full advantage of it with TomTom Plus services. These services, free until the end of 2006, add real-time traffic, weather, and safety camera information. You can also download additional POIs, maps, and voices via the service. Another feature, TomTom Buddies, allows you to see and communicate with your connected friends as they travel. The GO 910 configured a data connection with the E61 effortlessly, and the device was reporting traffic information and weather in seconds. If you have wireless data service and a Bluetooth-capable phone, TomTom Plus is worth a look, even when it becomes subscription-based in 2007.

The GO 910 also features an iPod control interface, which allows you to connect your iPod or iPod Nano (third generation or higher) via an optional cable and control it via the TomTom, while routing audio into your car stereo. As mentioned, there's also a dedicated MP3 player and image gallery application, features that are just icing on the cake for a device that manages to make GPS navigation accessible, easy, and fun.

Pros

• Tight integration of hardware and software
• Easy-to-use interface with clear, accurate voice prompts
• Excellent Bluetooth support for wireless data and hands-free calling functions

• Possible inaccuracies in POI database

--Joshua Gunn