The Crimson Trace CT RAD(TM) Pro (Rapid Aiming Dot) Electronic Sight is a full-size Open Reflex Sight for full frame pistols featuring a green 5 MOA aiming dot. Made of 7075 Series Aerospace Aluminum, it is 30% stronger than most industry standard sights made with 6061 Series Aluminum. The entire CT RAD(TM) family has an Innovative top strap design that deflects force if the sight is dropped. Features a CRIMSON Protect Lifetime Warranty. Recessed and fully multi-coated lens with a large quick acquisition window CT RADIANT(TM) Ambient Light Sensor automatically adjusts the aiming dot's brightness to the surrounding lighting condition CT MOTION(TM) Sensor detects movement of the firearm and automatically turns the reflex sight on Sight powers off after 2 minutes of zero movement Recessed and fully multi-coated lens with a large quick acquisition window AUTO Shutoff Function that automatically shuts off after 8 consecutive hours of operation to conserve battery life Manual ON/OFF Function that allows you to turn on or off the sight by using the side brightness buttons Easily installed on an optics cut slide using the CT RAD(TM) footprint compatible with the DocterA(R) footprint Includes an additional Low Profile Pic Rail to mount your Pro to most any MILSPEC Pic rail. Textured sides allow for a secure grip when racking the slide Large brightness setting buttons for easy use even with gloves on Battery Life - 7000 hours (1+ Year) Box includes : (1) Low Profile Pic Mount (1) CR1632 battery CT adjustment tool Mounting hardware Sight cover Instruction manual