Swann COHD4-A10804C-US 4 Channel SDI 1080p DVR with Smartphone Viewing and 4 x 1080p Day/Night Cameras (White) 4 Channels View & Record with High Definition 1080p Full HD Resolution Includes 4 Cameras with 1080p Full HD Camera Resolution 170ft / 50m Night Vision & 75 Degree Viewing Angle Pre-installed 2TB Hard Drive Easy DIY Installation