The Trijicon MRO (Miniature Rifle Optic) SD is a sealed miniature reflex sight intended for use on rifles carbines and shotguns to provide fast target acquisition. The large aperture and tapered light path maximize the viewing area and allow for better situational awareness and fast target engagement. Combine all this with the ambidextrous brightness controls sub-flush adjusters advanced lens coatings and the fully sealed waterproof hard anodized forged 7075-T6 housing and you have the ultimate mini reflex sight on the market. – The MRO SD features a re-engineered objective lens allowing for enhanced optical performance and magnifier compatibility. The MRO SD is also equipped with improved windage and elevation adjusters designed to maintain stricter zero retention requirements under drop and recoil. – INCLUDES – Trijicon Logo Sticker (PR15) – Lens Cloth – MRO Manual – Warranty Card – MRO Mount Guide – Full Co-Witness Mount – Length x Width x Height 2.9 in x 1.7 in x 2.1 in (73.66mm x 43.18mm x 53.34mm) – Weight 4.8 oz. (136.08g) – Magnification 1x – Objective Size 25mm – Reticle Pattern 2.0 MOA Dot – Day Reticle Color Red – Night Reticle Color Red – Illumination Source LED – Illumination Settings 8 – Power Source 1 CR2032 Lithium Battery – Battery Life 2.5 years of continuous use at day setting 3 (setting 5 of 8) at 70°F (21°C) – Adjustment 1/2 MOA per click – Adjustment Range 70 MOA Total Travel – Mount Full Co-witness Mount – Housing Material 7075-T6 forged aluminum – Finish Coyote Brown Anodized – Submersion Depth 100 ft. (30m)