Magellan Maestro 3100 3.5-Inch Portable GPS Navigator Precision turn-by-turn voice guidance lets you keep your eyes on the road 3.5-inch WQVGA full-color, anti-glare touch screen Equipped with SiRFstarIII, the fastest GPS position accuracy in the industry Built-in maps and destinations for the continental U.S. 750,000 Searchable points of interest