With free lifetime traffic, Zagat Ratings, 3-D images of highway interchanges, Lane Assist, and text-to-speech, the Navigon 5100 is rich in features that directly empower navigation. Plus, it looks great on your dashboard. It’s slim — less than an inch thick — and sports an easy-to-read 3.5" touch screen wrapped in an elegant chrome frame. The features and functions of the Navigon's portable GPS navigators are controlled via intuitive, easy-to-use animated menus that use predictive text input to quickly and easily select your city, state and address. Maps and menus appear on elegant, high-contrast, full-color touch-screen displays. Navigon portable GPS navigators run on a powerful Samsung 400 MHz processor, a fully integrated SiRF Star III GPS chip, 64 MBs of both RAM and ROM built in, and a rechargeable 1,200 mAh lithium ion battery that is rated for 4.5 hours of continuous use. All this is housed in an ultra-thin, sleek housing.