Garmin nuvi 3790T 4.3-Inch Bluetooth Portable GPS Navigator with Lifetime Traffic (Discontinued by Manufacturer) Less than 9 mm thick - about the same as a standard #2 pencil Full glass 4.3" diagonal multi-touch display Dual orientation capabilities allow you to use the nvi 3790T either horizontally or vertically Innovative speech recognition let's you control your nvi with your voice  allowing you to keep both hands on the whee Bluetooth compatible with a built-in microphone and speaker