The Garmin nuvi 3790T comes with some great features. The aforementioned voice command is a great addition to the device and once you become accustomed to the voice command features, you can even start commanding the nuvi 3790T without even looking at the device. The microphone for the nuvi 3790T can also be used for something other than just taking commands, the 3790T also features Bluetooth, allowing you to wireless connect your phone to the GPS.
The Bluetooth feature for the nuvi 3790T is solid, connecting seamlessly and matching up your contacts in the nuvi's phonebook. The nuvi has caller ID and a phone icon appears when your phone connects. Call quality was fairly clear, especially with the car mount, since the mount has a separate dedicated stereo. People receiving the call did have some problems hearing the call, but that was mostly due to the noise within the car, but if you have a solid, fairly quiet interior, call quality will increase.
Once you plug in the car charger, the nuvi 3790T immediately turns on the FM traffic feature. The nuvi 3790T offers lifetime traffic updates, no doubt being offered due to the current free traffic services that can be used on smartphone GPS systems. The streets are highlighted in the familiar green and red colors for no traffic and traffic jams respectively. The live traffic is usually very accurate and is an extremely helpful feature added to the 3790T. One thing to note however, is that the live traffic function is supported by ads, so you will see ads at the bottom of the screen. Kind of a disappointment considering the price of the device is $450, and one would expect that live traffic should come free without ads. It's not too distracting but for folks who don't like seeing ads, it may be a distraction.