*Aircraft-grade aluminum alloy housing, fogproof, shockproof and waterproof design*the brightness setting at each level is brighter than other cheap sights with 11 brightness settings.*The waterproof optics are O-ring sealed and will stay dry even go 30cm deep for 30 minutes.Unlimited Eye Relief -Makes for quick target acquisition.Compact and Lightweight -Perfect for a wide range of daytime applications including hunting, tactical scenarios and precision shooting.Parallax Corrected -Follows the movement of the shooters' eye while remaining fixed on the target, eliminating any need for centering.Shockproof and Waterproof -Fully waterproof with sealed housing. A shockproof aluminum body displays extreme durability.11 Intensity Levels of Brightness -Provide optimal visibility in any light conditions, let shooters cater the dot intensity to the situation at hand.1" Riser Mount - Perfect for absolute co-witness with iron sight.