Features:Completely sealed and nitrogen filled for waterproof, fog proof, and shockproof performanceProvides consistent extended eye relief for shooter to effectively use on any firearm where the optics cannot be mounted directly above the action30mm Tube and Emerald Coated lenses for maximum light and edge to edge clarityEZ-TAP Illumination Enhancing (IE) System with red/green dual-color mode and 36 colors in multi-color mode to accommodate all weather/light conditions 1-Click illumination memory gets the operator right back to the color/brightness setting last usedZero lockable and zero resettable target turrets with precise 1/2 MOA clicksSide focus parallax from 10 yards to infinity Complete with TactEdge angled integral sunshade, flip-up lens covers, and Twist Lock picatinny Rings