The Crimson Trace 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.Made of 7075 Series Aerospace Aluminum, it is 30% stronger than most industry standard sights made with 6061 Series Aluminum. The entire CT RAD 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 windowCT RADIANT Ambient Light Sensor automatically adjusts the aiming dot's brightness to the surrounding lighting conditionCT MOTION Sensor detects movement of the firearm and automatically turns the reflex sight onSight powers off after 2 minutes of zero movementRecessed and fully multi-coated lens with a large quick acquisition windowAUTO Shutoff Function that automatically shuts off after 8 consecutive hours of operation to conserve battery lifeManual ON/OFF Function that allows you to turn on or off the sight by using the side brightness buttonsEasily installed on an optics cut slide using the CT RAD footprint compatible with the Docter footprintIncludes 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 slideLarge brightness setting buttons for easy use even with gloves onBattery Life - 7000 hours (1+ Year)Box includes :(1) Low Profile Pic Mount(1) CR1632 batteryCT adjustment toolMounting hardwareSight coverInstruction manual