Parallex-free double-pane glass sighting system helps user with a wide view. Internal locking system helps secure optic. Brings unlimited eye relief for the user. Night vision mode helps illuminate low light environments. Prevents the toughest recoil from maximum intensity. Metal protective shield prevents scratches which increases durability. Shockproof and waterproof frame to endure harsh situations. Light weight optic that does not put the weight down. In the Box 1X Reflex Sight 1X Pair of Adjustment Tools 2X Batteries Specifications: Manufacturer Sightmark Build Aluminum Battery Type CR1632 Weight 0.6 lbs Reticle Type 5 PatternsLens Coating AR Red California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov