4 channels real time mobile DVR, Vehicle DVR, which can be widely used ... household, office, supermarket, etc. Name: 4 channels real time mobile DVR, Vehicle DVRModel: VR850Technical Index:Brief Introduction:VR850 is a ... : ISDN, ADSL, LAN, WAN;13.Dynamic IP: support internet connection assigned with dynamic IP address;14.Real-time intercom ... : 480*300*375(mm) 4 channels real time mobile DVR, Vehicle DVR