GPS Navigation for Dummies FD-250 3.5-Inch Portable GPS Navigator Full-color, 3 1/2-inch touch screen provides clear, crisp images for easy viewing. Versatile 2D and 3D mapping options, along with turn-by-turn voice directions, get you to your destination. Digital music player and picture viewer make it perfect for everyday use. Abundant points of interest direct you to important locations, from stores to hospitals. Car charger offers power on the go.