It is an exceptional portable navigation device with just the right blend of form and function. Garmin designed the Nuvi 3790T to be the thinnest, lightest portable navigation device ever and to go toe-to-toe with the iPhone in a fashion show.
Garmin started by making things thin. At 4.8 inches wide and 2.9 inches tall, it doesn't look much smaller than your average PND while in its packaging, but unbox it and lay it side by by side with any automotive portable navigator and the svelte nature of the 3790T's chassis becomes evident. At 0.35 inch thick, this Nuvi is about half the thickness of any other Garmin, thinner even than the iPhone 4.