4ch mini Moblie DVR with 3.5inch TFT screen,support 2.5 SATA ... audio,3G,GPRS,screen all are optiona 4ch mini Moblie DVR with 3.5inch TFT screen,Car Black box,Vehicle ... when fullInternet InterfaceOne 10M/100M RJ45Alarm outputCan connect alarm with audio and lightHDD InterfaceOne 2.5″SATA HDD interfaceCompatible ... GPS chart recorder(black box)Surveillance Picture 4ch mini Moblie DVR with 3.5inch TFT screen