The CT RAD Pro (Rapid Aiming Dot) Electronic Sight is a full-size Open Reflex Sight for full frame pistols. Featuring a green 5 MOA aiming dot, the CT RAD Pro has a recessed and fully multi-coated lens with a large quick acquisition window. The CT RAD Pro comes with the CT RADIANT Ambient Light Sensor that automatically adjusts the aiming dot’s brightness to the surrounding lighting condition. The CT MOTION Sensor detects movement of the firearm and automatically turns the reflex sight on. The sight powers off after 2 minutes of zero movement. The CT RAD Pro comes with an AUTO Shutoff Function that automatically shuts off after 8 consecutive hours of operation to conserve battery life and a manual ON/OFF Function that allows you to turn on or off the sight by using the side brightness buttons.