Detailed Product Description car gps navigation with GSM function1. 7 inch TFT touch screen, solution: 800* ... SD card7. Types of operation methods: touch screen, keystroke8. Functions: Navigation, MP3, MP4, JPG picture,E-Book9. Numbers of signal receiver ... service of audio visual products. Our main products include car navigation GPS, DVB-T receiver / Set Top Box, DVD, DIVX, music ...