Features: Extreme heat and cold resistance. Waterproof and fog proof. Impact tested and verified. Battery type: CR2032. Aircraft-grade aluminum construction. Description: Whether it's topping your AR, shotgun, or pistol, the DeltaPoint Pro gives you a clear view and the clear illuminated point you need for accurate aim in high-pressure situations. Motion sensor activity saves battery life, and the mount does not have to be removed to change the battery. The mount brings the red dot to just the right height without adding weight or bulk. Like all Leupold riflescopes, it's designed, machined, and assembled in the USA and guaranteed for life. Fits any Picatinny rail. Take a look at more useful gun accessories at Blade HQ!