What's in the Box Absolute Cowitness QD Mount User Manual Lens Cloth T10 L Key CR2032 Battery The HE510C-GR is an open reflex optical sight designed for rifle and carbine applications. Features include Holosun s Green Super LED with up to 50k hours battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake. Product Features Green MRS: Circle Dot; 2 MOA Dot; 65 MOA Circle Up to 50,000 Hours Battery Life (Setting 6) 12 Brightness Setting: 10 DL & 2 NV Compatible Convenient Tray Battery Compartment Parallax-free & Unlimited Eye Relief Product Specifications Reticle: 2 MOA Dot & 65 MOA Circle Light Wavelength: 540nm Reticle Color: Green Parallax Free: Yes Unlimited Eye Relief: Yes Magnification: 1x Multi-Coatings: Yes Power Source: Battery Battery Type: CR2032 Battery Life (Hours): 50000 Brightness Setting: 10 DL&2 NV Window Size: 0.91x1.26 Dimensions (inches): 3 .3x1.68x1.78 Weight (oz): 4.94 Housing Material: Aluminum & Titanium Hood Surface Finish: MAO Adjustment Per Click: 0.5 MOA W&E Travel Range: 50 MOA Storage Temperature: -40?~70? Working Temperature: -30?~60? Submersion: IP67 Vibration: 1000G