... Nand flash / external SD card Main features:1. 7 inch TFT touch screen, solution: 800*480 2. CPU: SAMSUNG S3C2443 400MHZ 3 ... flash / external SD card 6. Types of operation methods: touch screen, keystroke 7. Functions: Navigation, MP3, MP4, JPG picture, textbook, calendar ... box:18.1*12.2*9.8cm 5 inch touch screen GPS Navigator