The LED ACOG is the first to offer user-selectable brightness controls. Users can select from six adjustable brightness levels with an "off" between each setting, allowing the operator to determine how much to illuminate the reticle - even in transitional lighting. Users can select multiple bullet drop compensating and ranging reticle options. Includes a thumbscrew flattop adaptor, AA battery, LENSPEN, lanyard assembly for adjuster caps, lanyard assembly for battery cap, Trijicon logo sticker, LED ACOG manual and warranty card. Length 8" Proofs Fog/Shock/Water Resistant Series Riflescope Weight 16.80 oz Reticle LED Illuminated Green Crosshair 308/7.62 BDC Objective 35mm Eye Relief 2.40" Coating Type Anti-Reflective Field Of View 28.90 ft @ 100 yds Magnification 3.5x Optic Coating Multi-Coated Tube Diameter 30mm-35mm Parallax Adjustment Illuminated Green Crosshair 308