Digital Video Recorder Kit, Camera Design Bullet, Number of Cameras Included 4, Maximum Focal Length 2.8 mm, Camera Resolution 1080p, Camera Operating Voltage 12V DC, Internal Memory Capacity 4 TB, Components Included DVR, Power Supply, Remote Control, Maximum Viewing Angle 92.8 Degrees , Camera Diameter Not Applicable, Camera Height 3 1/2 in, Camera Length 6 1/8 in, Camera Pixels 1920 x 1080, Camera Width 3 1/4 in, Color Display Color, Features Supporting HD-TVI/AHD/CVI/960H Cameras