Quanmin 7inch Portable HD Screen Car GPS Navigation Sat Nav 800MHZ FM DDR256M RAM 8GB Bluetooth AV-IN With Newest USA Canada Mexico 3D Map 7.0 inch Capacitive screen TFT ,resolution: 800x480 pixels,multi-language supported WinCE 6.0 system,built-in 8GB ROM,DDR:256MB Newest All America Maps (lifetime free map updates),24Months Warranty Item must be charging while navigating, for the battery can't last long ,about 1 hours Support Speedcam Warning, Lane assist, Voice guidance, 2D/3D maps, Postcode search, POI search, Traffic alert. AV-IN support car rear backup camera,Bluetooth support phone calls and music playback function