Car stereo additional functions bluetooth usb player integrated features car radio with screen radio sd card reader usb player audio formats mp3 wma receiver tuner amfm total output power 4 x 25 watt connections sdsdhc card reader usb rear view camera input pre amp out av in av out aux in display type touchscreen bluetooth profiles a2dp avrcp pba pbap hfp display size inches 7 inches display size cm 1778 cm illuminated keypad multiple options