The Hikvision DS-7316HQHI-K4 is a Turbo HD Digital Video Recorder offering 16 Channels of high quality, real time recording at 1080P. It allows for up to 3MP resolution for recording (3MP input channel 1-4). Long distance transmission over UTP and coaxial cable: max. 800m for 1080p and 1200m for 720p HDTVI signal. The Hikvision DS-7316HQHI-K4 also has the additional benefit of supporting up to 18 IP cameras of up to 4MP each. The IP cameras will need to be powered seperately and connected to your LAN via a Router. For storage it allows up to 4 8TB hard drives to be connected and also has 1 eSATA port.