Black Box 1080P Dash Cam, 3-4 Cam MDVR System, For Fleets/ TruckersMDVR 1080P 3 to 4 Tamper Proof Camera System with 7 inch LCD Cameras: Choose from 4 different types of weatherproof heavy duty night vision cameras with Auto White Balance. (AWB) setting helps your camera guess the best option or choose the one closest to what your eyes might see. White balance is the process that the camera uses to remove color casts produced by these different color temperatures and helps your camera emulate what our eyes do