... mainboard,dual CPU 2)GPS Navigation,FM transmitter 3)Screen size: 4.3 inch 4)Touch screen 4.3inch rear view mirror TFT ... display GPS Features of rear view mirror:1)CPU: Advanced design,#84 mainboard,dual CPU 2)GPS Navigation,FM transmitter 3)Standard ... 5.012)High speed USB2.0 interface13)rear view backup function(can be upgraded to rear view backup camera kit)14)high quality 850MAH ...