30mm tube with best in class emerald lens coatings to achieve maximum light transmission for best clarity; Built on true strength platform, completely sealed and nitrogen filled, shockproof, fogproof and rainproof; Innovative EZ-TAP Illumination Enhancing (IE) system with Red/Green dual-color mode and 36 color Multi-color mode to accommodate all weather/light conditions (U.S. Pat. 8,437,079; EU patent pending); 1-click high-tech illumination memory feature gets you right back to the color/brightness setting last used; Premium zero lockable and zero resettable target turrets with most consistent and precise 1/4 MOA per click adjustment; Side Wheel Adjustable Turret (SWAT) for parallax adjustment - from 10 yards to infinity; Side wheel ready for optional big wheel to achieve finer parallax adjustment; TactEdge angled integral sunshade complete with flip-open lens caps and high quality max strength quick detach picatinny/weaver rings; Black Finish