DescriptionModel Number : 3-9x40mm Hunting Riflescope Optical ScopeFunction : Red DotType : RIFLEOrigin : Mainland ChinaMagnification : 3-9xWeight : 402gLength : 314mmObjective lens diameter : 47mmobjective lens diameter : 40mmExit pupil distance : 3.13-8inDiameter : 25.4mmLens coating method : purple filmShock resistance : 800G shock resistanceClick value : 1/4inch@100 ydsOne-piece tube or not : YesDiopter adjustment or not : YesNitrogen-filled or not : Yeswaterproof and anti-fog : Yes3-9x40mm Hunting Riflescope Optical Scope Telescopic Sight Shooting for Air Rifle 11/20mm Optics Tactical Airsoft Sniper ScopesFeatures:1.It is good for hunting/shooting at varying ranges where estimating holdover is a concern.With long eye relief and an ultra-forgiving eye box, you'll be able to quickly get a sight picture and acquire your target. The fast focus eyepiece allows quick and easy reticle focusing.2.It helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern.3.One-piece tube constructed from aircraft grade aluminum ensures strength and shockproof performance. completely sealed and nitrogen filled waterproof and fogproof.4.Purple film design, it has better light transmittance, better vision, reduce specular reflection light, and greatly prevent strong ultraviolet, infrared and other light from causing great damage to the eyes. It will also be more abrasion resistant, with 90% light transmission, bright images and excellent color contrast.Specifications:Magnification: 3-9Weight: 402gLength: 314mmObjective lens aperture: 47mmobjective lens diameter: 40mmExit pupil distance:Diameter: 25.4mmLens coating method: purple filmShock resistance: 800G shock resistanceClick value: 1/4inch@100 ydsOne-piece tube or not: YesDiopter adjustment or not: YesNitrogen-filled or not: Yeswaterproof and anti-fog: YesPackage includes: