The Romeo-MDC open reflex sight for compact pistols. Features the Shield RMSc mounting footprint; glass aspherical lens; 12 brightness settings- 10 day/2 night; top-mounted battery, with no need to remove the optic from the firearm to change the battery and convenient dual side brightness buttons. Product Features Durable 7075 aluminum housing for long-term structural integrity Industry-standard shield RMSc footprint for broad compact pistol compatibility 3 MOA or 6 MOA red dot with 12 brightness settings (10 Daytime / 2 NV) Top-mounted CR1632 battery compartment no need to remove the optic Up to 20,000 hours of continuous runtime IPX7 waterproof rated (1 meter submersion for 30 minutes) Lightweight 1.03 oz design optimized for concealed carry Product Specifications Color: Black Finish: Matte Material: 7075 Aluminum Magnification: 1 x Objective Lens Diameter 26 mm Reticle: 3 MOA, Red Dot Illumination Type: LED Illumination Color: Red Brightness Settings: 12 Adjustment Type: MOA Emitter Type: Open Lens Material: Aspherical Glass Optical Coating: Spectracoat Battery Quantity: 1 Battery Life: 20000 hours Weather Resistance: Waterproof Water Resistance Level: IPX-7 Water Resistant Mark: 1 m Length: 1.58 in Width: 1.08 in Weight: 1.08 oz Red Dot Sights-Footprint: RMSc Lens Type: Aspherical