Experience fast, responsive accuracy in diverse lighting conditions and backgrounds with the Vortex CrossfireA(R) - Green Dot. Using the most visible color to the human eye and a reliable, uncomplicated design, it delivers impressive versatility on your carbine or shotgun. Backed by the VortexA(R) VIPA(R) Warranty. Fully Multi-Coated Lenses Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. 9 Daylight Bright Brightness Settings Daylight bright, illuminated center dot aids in faster center-point acquisition in bright daylight conditions. Night-Vision Compatibility The lowest 2 settings are night-vision compatible. Parallax Free All red dot 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. Unlimited Eye Relief Non-critical eye relief for rapid target acquisition. Multi-Height Mount System Lower 1/3 Co-Witness Mount and Low Mount. Low-Glare Matte Black Anodized Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position. Single-Piece Chassis Compact and lightweight. Nitrogen Gas Purged Gas purged and O-ring sealed for fogproof and waterproof performance in all conditions. Waterproof Designed to withstand harsh weather conditions. Fogproof Designed to withstand a wide range of temperatures. Shockproof Designed to withstand the highest levels of recoil and impact. 2 MOA DOT RETICLE : The daylight bright green dot is easy to see and paints targets regardless of lighting conditions or background. What's in the BOX : Rubber Cover CR2032 Battery TorxA(R) T-10 Wrench Lower 1/3 Co-Witness Mount Low Mount