... gps navigation system ,with 128M DDR, 4GB built in RAM , FM,E-book, Photo view and MP3;using Wince 6.0 ... wince6.0 built in 4GB (MF-4409)with free map,FM, E-book,USB card slot Main features: Screen size4.3 ... battery 1000mahPowerDC 5V -1.5A, charged by car chargerFunctionGPS Navigation,FM transimitter, MP3/MP4, E-bookEnvironmentWorking temperature -10°C to +70C Keeping ...