Purpose-built for the fast pace of turkey hunting and wingshooting, the ViperA(R) Shotgun Enclosed Micro Green Dot delivers an ultra-low-profile design and wide field of view for intuitive shooting and superior recoil control. It&&';;s enclosed design and integrated universal mount ensures seamless operation and maximum protection against the elements. Features: Integrated Universal Mounting System Enclosed Aluminum Housing Large Viewing Window Aspherical Lens Motion Activation with 10 Minute Auto-Shutoff Top Buttons for quick adjustments. Parallax Free - All red dots and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance. Non-critical eye relief for rapid target acquisition. Side Load Battery Waterproof Designed to withstand harsh weather conditions. Fogproof Shockproof In The Box: Rubber Cover Custom Tool CR2032 Battery Lens Cloth Most Common Mounting Screw Sets