The Trijicon Specialized Reflex Optic (SRO) 2.5 MOA Adjustable LED red dot is the most popular reticle size and can be used in a wide variety of pistol and other shooting applications such as target shooting or plinking. The wide field of view and clean, crisp dot makes it easy for users to find and track the dot in both target and competitive shooting applications, helping improve shooting accuracy and speed. Every SRO features both manual and automatic LED brightness modes and a 3-year battery life. The SRO is designed to survive the rigors of slide ride pistols and is engineered for hard use. It shares a similar electronics design with the proven Trijicon RMR. Like the RMR the SRO is forged from 7075, T-6 aircraft grade aluminum, making it much more durable than conventional red dot sights. This forged housing protects the lenses and electronics, and it has been tested to survive typical pistol mounted drops.NOTE:If selecting an SRO for mounting on the Glock MOS, Springfield OSP, Walther PDP, or H&K VP9 Optics Ready, a Trijicon SRO mounting kit (AC32085) is required.INCLUDESTrijicon Logo Sticker (PR15)2 #6-32 Flat Head Torx Cap Screws 1/2″ LongTorx Head KeyManualWarranty CardLARGE, UNOBSTRUCTIVE FIELD OF VIEWParallax-free and compatible with suppressor-height iron sights.EASY, ADJUSTABLE WINDAGE & ELEVATIONTool-less design makes zeroing hassle-free.SAME FOOTPRINT AS RMRMounts easily using the same base as the Trijicon RMR.CLEAR, CRISP DOTFine-tuned, illuminated reticle, coupled with exceptionally clear front lens, offers a clear sight picture with a crisp dot.TOP-LOADING BATTERYMakes battery-switching fast and easy.COMPLETE USER-CONTROL ILLUMINATION SETTINGS8 brightness settings, including 1 super bright mode and 2 night vision modes.BUTTON LOCK-OUT MODESecures the Auto-Brightness setting featureideal for everyday carry and hunting.BUTTON LOCK-IN MODESecures the user-chosen brightness setting indefinitelyideal for competition and target shooting.WATERPROOF UP TO 10 FEET (3 METERS)Made with durable 7075-aluminum housing.RED DOT PISTOL READYDesigned to fit on many of the most popular red-dot-ready brands on the market.Length x Width x Height:2.2 in x 1.3 in x 1.4 in(55.88mm x 33.02mm x 35.56mm)Weight:1.6 oz. (45.36g)Magnification:1xReticle Pattern:2.5 MOA DotDay Reticle Color:RedNight Reticle Color:RedBindon Aiming Concept (BAC):NoIllumination Source:LEDIllumination Settings:Automatic and 8 Adjustable Settings (2 NV, 6 Visible)Power Source:1 CR2032 Lithium BatteryBattery Life:Over 3 years of continuous use (when used at 70F (21C)) at setting 4 of 8Adjustment:1 MOA Per ClickAdjustment Range:150 MOA Total TravelMount:Not IncludedHousing Material:7075-T6 forged aluminumFinish:Matte BlackSubmersion Depth:10 ft. (3m)