Features: 1) Portable design: easy to take from car to car 2) Simple touch-screen operation 3) Voice instructions 4) Anti-glare screen 5) USB1.1 6) Integrated GPS antenna 7) Car charger and home charger 8) SD / MMC card is optional 9) Preinstalled original software and convenient tools: alarm clock, calculator 10) General map software supporting Specification: 1) Display: 3.5 inch TFT LCD with touch screen 2) Chipset: SiRF3 chipset, 20 channels 3) CPU: Sumsung / 400MHz 4) O.S: Microsoft Window CE4.2, MS Office, MS media player 5) Memory: 64M flash RAM build-in 6) Antenna: build-in 360-degree rotatable antenna, high sensitivity receiver, 7) I/O: Stylus pen /software keyboard/ hot keys 8) USB: 2 USB ports, one for PC, and the other for music or maps from storage device, infrared ray supporting 9) Audio: input and output, build-in speaker 10) Battery: rechargeable Li-ion battery 11) Accessories: holder, our GPS software, home charger and car charger for free. Map software is not free 12) Power: DC 5.0V / 2A