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The NV-U83T offers text- and voice-guided directions in English, Spanish, or French. In addition, the unit has text-to-speech functionality so you'll hear actual street names instead of generic voice prompts. Maps are presented in 2D or 3D view with automatic day/night mode, and there are options to change the map colors, road width, and icon and font sizes, which is a nice extra. You can set map orientation to face the direction in which you are driving, or North. On a specific route, the NV-U83T will provide a split-screen view for upcoming turns. On the right side, you'll get the overall map view while the left side will show the distance to and direction of your next turn. For particularly complicated intersections, such as highways and freeways, you'll even get 3D rendering so you have a better idea of what exit to take.
The Sony NV-U83T also has integrated Bluetooth, so you can pair it with your Bluetooth-enabled cell phone and use it as a hands-free speaker system. Once connected, you can either use the touch screen to accept or reject calls. You can also add four numbers to a speed dial function, and if a number is listed with a POI, there's an option to dial out directly. The only downside is that your phone's address book and call history won't automatically synchronize with the unit.
As we mentioned earlier, the address entry and pretrip planning process required more work and time than other systems. Unlike some other GPS devices, the NV-U83T doesn't have predictive entry, meaning that as you start inputting letters for a city, state, or street, it doesn't automatically cull likely search results. Instead, you have to type out the whole word and even then, it takes the system a while to come up with the results.
For our road tests, we took to the streets of San Francisco. From a cold start and under clear skies, it took about 5 minutes for the NV-U83T to get a fix on our location, while subsequent starts were erratic, taking anywhere from a few seconds to a solid 10 minutes. On one occasion, we were nearly halfway home before the receiver finally got a fix; thankfully, we knew where we were going. Once locked on, however, the unit did a good job of accurately tracking our position, and the Position Plus technology did give us a more accurate reading as we went through a couple of tunnels.
As usual, we also entered our standard trip from the Marina District of the city to CNET's downtown headquarters. Even though the process of entering addresses was laborious, the NV-U83T was fairly quick to return with directions. We checked the prescribed route and didn't necessarily agree with it, knowing that there was a more efficient route. Still, we followed the directions but missed a few turns to test the route recalculation rate. While pretty fast, the new instructions were baffling as it took us on a more roundabout track. On the bright side, the voice prompts were loud and clear, and the system did a good job with street pronunciations. The Gesture Commands feature also worked well.
We had no problems pairing the NV-U83T with the RIM BlackBerry Pearl 8110 and were able to make calls almost immediately, though audio quality wasn't pristine with just a bit of static. The Sony NV-U83T battery is rated for up to two hours of continuous use.