... 3G&WIFI and HDMI output 100/120fps recording for D1 4 channel playback simultaneously Support:Arabic,Czech ... & display zoneAudioAudio CompressionG711ABidirectional TalkSupportRecord &PlaybackRecording ModeManual>Alarm>Video Detection>ContinuousPlayback1~4 channels playback simultaneously,Pause,stop,rewind ... stickInterfaceVideo Input4 channel,BNC,1.0Vp-p,75Ω Video Output2 channel TV output BNC,1.0Vp-p, ...