... interface,4 CH video+2 CH audio,3G,GPRS,are optional 4ch 3G,GPS mini Car DVR with 3. ... (MDVR8800N, MDVR8800, MDVR8800G, and MDVR8800GP) are the next generation, high-performance, 4-Channel D1 mobile DVR. It uses ... SATA HDD interface,4 CH video+2 CH audio,3G,GPRS,screen all are optional Function 1. Immediately ... control support GPS chart recorder(black box) 4ch 3G,GPS mini Car DVR with 3.5inch TFT screen ...