digital video recorder dvr -H.264,4chs video,1ch audio -3G Mobile view - ... live,recording,playback,backup & remote accessUser InterfaceGUI,on-screen menu tipsDisplay1/4VideoVideo StandardsPAL 625 line,50 ... snapshot & FTPAudioAudio CompressionG711ABidrectional TalkSupportRecord &PlaybackRecording ModeManual>Alarm>Video Detection>ContinuousPlaybackMulti channels playback simultaneously,pause,stop,rewind ...