specifications: 1. 7 inch TFT touch screen, solution: 480*234 2. CPU: SAMSUNG S3C2440A-40 400MHZ 3. IC: Sirf StarIII 4. Operating system: WinCE 4.2 5. Storage: internal 128M Nand flash / external SD card 6. Types of operation methods: touch screen, keystroke 7. Functions: Navigation, MP3, MP4, JPG picture, textbook, calendar 8. Numbers of signal receiver: 20 Channels 9. Precision of Locating:Less than 10m 10. Antenna: with GPS internal Antenna and reserved external GPS Antenna jack 11. DC IN: 12V 12. support different country's map; support 16 languages including French, German, Spanish, Holland, Hungarian, Portuguese, Russian, Swedish, Norwegian, Denish, Italian, Finnish, Romanian, simple Chinese, traditional Chinese, English 13. with outside speaker packing: Size: 208?10?3mm Export carton: 6 PCS N.W: 11.04 kgs G.W: 12.04 kgs Size: 66*33*30 cm