Detailed Product Description car gps navigation with GSM function1. 7 inch TFT touch screen, solution: ... Channels10. Support FM Transmitter11. Built-in 64MB SDRAM12. Antenna: with GPS internal porcelain Antenna13. Battery: 1650mAH battery14. With Lock button15. DC ... of audio visual products. Our main products include car navigation GPS, DVB-T receiver / Set Top Box, DVD, DIVX, music systems ...