4ch mini Moblie DVR with 3.5inch TFT screen,support 2.5 SATA HDD interface,4 CH video+2 CH audio,3G,GPRS,screen all ... are optiona 4ch mini Moblie DVR with 3.5inch TFT screen,Car Black ... weight2.2 KGOptional FunctionsPanning Table control support GPS chart recorder(black box)Surveillance Picture 4ch mini Moblie DVR with 3.5inch TFT screen ...