CT MOTION Sensor – Detects movement of the firearm and automatically turns the reflex sight on. Sight powers off after 2 minutes of being stationary. CT RADIANT ambient light sensor – The ambient light sensor automatically adjusts the aiming dot's brightness to the surrounding lighting condition. CT RAD Mounting Pattern – Fits most full size handguns and is compatible with the Docter footprint. Recessed optic lens for increased durability. Adjustable windage and elevation – aerospace aluminum construction – IPX4 water resistant – Rubber sight cover included – Top access battery location. (1) CR1632 battery included – 20,000 hours of runtime (Red)/7,000 hour Mfg: Crimson Trace Corporation