CT MOTION(TM) Sensor - Detects movement of the firearm and automatically turns the reflex sight on. Sight powers off after 2 minutes of being stationary. CT RADIANT(TM) ambient light sensor - The ambient light sensor automatically adjusts the aiming dot's brightness to the surrounding lighting condition. CT micro(TM) Mounting Pattern - Fits most compact handguns and is compatible with Shield RMSA(R)and JPointA(R) footprints. Integrated rear sight cut into the base of the CT RAD(TM) micro for use with front iron sight - Recessed optic lens for increased durability. Adjustable windage and elevation - aerospace aluminum construction - IPX4 water resistant - Rubber sight c Mfg: Crimson Trace Corporation