... in web server,multi-DVR client &SMS Networking access for remote live viewing,recording,playback,setting,system statu,event log ... ConpressionG711ABidrectional TalkSupportRecord &PlaybackRecording ModeManual>Alarm>Video Detection>ContinuousPlayback8 channel playback simultaneously,Pause,stop,rewind,fast play,slow play ... size 511*380*153mmWeight4.5KGMountingDesktop 8 channel DVR motherboard/mainboard