... 4ch 3G mobile DVR 2.120 days continuous recording 3.Remote live viewing 4. PTZ control 4ch H.264 3G mobile DVR·4 channels CIF Real-time recording ... ,CD/DVRD-RW·Six operations: preview, recording, playback, network transmission, backup and mobile ... levelsVideo LossSupportAlarm InputNOOutputNOPlaybackSynchronous Playback4chSearch ModeDate, Time, Event, ChannelBackupBackup ModeUSB HDD, NetworkHDDInterface ...