X-gps GPS S570hd MTK 7.0" Inch 800*480 GPS Navigation, Bluetooth, Av-in, Fm,4 GB Au/ Us Map, Mp3 CPU:Media Tek MT3351 GPS module:Media Tek MT3351 SDRAM:128MB & 4GB nand-flash & AV-in & Bluetooth Display:7.0" HD 800*480 True Color LCD Touch Screen GPS accuracy:Position - Less than 10 meters (33 feet), 95% typical velocity - 0.1 meters per second steady state