REVO America R165D2GT6GM21-2T 16 Channel 2TB 960H DVR Surveillance System with 8 700TVL 100-Feet Night Vision Cameras and 21.5-Inch Monitor (Black) Connection type: 12 RJ12 and 4 BNC ports Cameras have a built in microphone for audio monitoring capability View and access live and recorded video remotely over the internet or mobile phone Camera lens: 3.6mm, Hard Drive: 2TB , Resolution: 700 TV lines LED lighting distance: max 100ft