1. 4.3 inch TFT Touch screen, solution: 480*272. 2. Centrality Atlas ó(, 500mHZ; WinCE 6.0 3. Storage: internal 128M Nand flash (up to 4GB) / support external SD card 4. Types of operation methods: touch screen 5. Functions: Navigation, MP3, MP4, JPG picture, textbook, calendar. FM transmitter & AV in function, Bluetooth for optional 6. Numbers of signal receiver: 20 Channels 7. Battery: with 820mAH built-in Lithium battery 8. DC IN: 5V 9. support 19 multinational languages 10. with built-in speaker. Giftbox Size:16.8*12.8*11.0(cm)N.W:0.55KGG.W:0.6KG. Carton Size:57.5*35.0*28.0(cm)N.W:11KGG.W:12KG.