Magellan RoadMate 300 4.3-Inch Portable GPS Navigator Simple, powerful and portable--the first vehicle navigation device for everyone Same user-friendly interface as Magellan RoadMate 700 and Hertz NeverLost system Major North American roads map preloaded into 128 MB internal storage, more map storage available via SD Card slot Turn-by-turn voice prompted guidance with automatic route recalculation No professional installation required; includes USB interface and cable