... ,4 CH video+2 CH audio,3G,GPRS,are optional 4ch 3G,GPS mini Car DVR with 3.5inch TFT screen,Car Black box,Vehicle DVR,mini mobile DVR JD-MDVR8800 series ... interfaceCompatible cameraCommon CMOS & CCDDimension194mm ×180mm×50mmNet weight2.2 KGOptional FunctionsPanning Table control support GPS chart recorder(black box) 4ch 3G,GPS mini Car DVR with 3.5inch TFT screen