Athlon Optics Midas Flash Red Dot Sight, 6 MOA Battery: CR2032 Magnification: 1x Objective lens: 22x16 mm Fully-multicoated lenses Aircraft grade aluminum Waterproof Fog proof Shockproof Nitrogen purged Motion activated 50,000-hour battery life Auto shutoff after 5 minutes RMR mount Reticle size: 6 MOA Reticle: Dot, Circle, Circle/Dot Reticle color: Red with adjustable illumination Length: 1.78" Weight: 1.16 oz Lifetime Warranty