Holosun's Enclosed Pistol Sight (EPS) is a compact enclosed pistol sight designed for concealed carry pistols. Featuring an easy to see 6 MOA green dot and rugged 7075 T6 aluminum construction this sight can last up to 50,000 hours on one CR1620 battery. The very low deck profile of the EPS allows you to still use the iron sights on most pistols in the rare event that you run out of battery. Be amazed at how accurate you can be with your pistol, try the Holosun EPS today. Product Features 6 MOA Green Dot Up to 50,000 Hours Battery Life Parallax-Free & Unlimited Eye Relief Aspherical Glass Lens with Zero Distortion 7075 T6 Aluminum Construction IPX8 Certified Waterproof Holosun "K" Series Footprint Product Specifications Magnification Range:1x Reticle Details: 6 MOA Red Dot Objective Lens Diameter: 0.63 x 0.91 inch window size Dimensions: 1.62 x 1.19 x 0.99 inches Weight: 1.4 oz Battery: CR 1620 Battery Type: CR1620 Night Vision Compatible: Yes Brightness Settings: 12 Brightness Settings Product Type: Reflex Sight/Red Dot