The Trijicon SRS (Sealed Reflex Sight) represents the highest level of performance in sealed reflex sights. By combining the most advanced technology and design features, the SRS establishes a new standard. The SRS includes a compact body without compromising the durability you are expecting from Trijicon. The short body also gets rid of tube effect that may be common of other tube-style red dot sights. The 28mm aperture lends itself to a generous field of view and extremely quick target acquisition and the 1.75 MOA dot features ten brightness settings to match any situation. One added feature of the SRS is a actually innovative photovoltaic solar cell that acts as the principle power source throughout daylight conditions. A single AA lithium battery will exceed 3-years of continuous use thanks to the technology in the SRS. Technical InformationStyle: ReflexMagnification: 1xSight Window: 28mmAdjustment value @ 100 yards(clicks/in): 1/2 MOAReticle: 1.75 MOA DotReticle color: RedHousing material: Forged AluminumRecoil Resistance: N/ABattery Type: AA (1)Lens Coating: Multi-layer Broadband Anti-Reflective CoatingWaterproof: YesLength: 3.75″Weight: 15.1 oz.Warranty: Limited LifetimeThank you for viewing this listing offered by Rockhillsports! The buyer of this auction will receive the exact item pictured and described in the title. Each item we sell is brand-new 100% authentic, original, in an unopened box. Because of the large volume of items we sell, we ask that you seek advice from the manufacturers homepage for detailed specifications about this item.International customers please message about shipping!!