... Built in highly sensitive analog TV tunerCar reverse camera input (switch automatically)USB*1 port: supports MP4, DIVX, ... *2 card slots: support GPS map, MP4, DIVX, JPEG, MP3, WMA GPS(Optional)Operating systemMicrosoft Windows ... KeyHang up call, redail, reject, accept callBuilt-in microphoneYesReceived CallYesDialled CallYesMissed CallYesConnectionVideo Input1Video Output2Audio Input2Audio Input4.1 ...