Portable GPS device with built in roadmap for entire USA and Canada. Turn-by-turn voice navigation with street names spoken out. Door-to-door 3D guidance and high resolution 4.3" LCD color display. Touch screen menu, 1.6 million points-of-interest guide. Built in MP3 / video player / ebook. SD memory slot for unlimited storage. Windows CE operating system and rechargeable Li-ion battery. Bluetooth feature.