Leapers OPRMR20R Op3 Micro Single Dot Black Anodized 1X 4 MOA Red Dot Reticle Precision Machined From 6061-T6 Aluminum And Finished In a Matte Black Anodization. Red 4.0 MOA Single Dot With 8 Brightness Intensity Settings. 55,000+ Hours Battery Life at Middle Brightness Setting. Magnetized Battery Compartment Reduces Intermittent Reticle Illumination And Flicker. Crisp 1 MOA Per Click Adjustment. Large FOV Multi-Coated Glass Lens. IPX7 Waterproof Rated. Includes Removable Low Profile Picatinny Mounting Base. Mounting Base Interface Uses The Common RMR Footprint. Optic Height Co-witnesses With Most Suppressor Height Iron Sights. Tertiary Aiming Point Laser Engraved On Rear Face Of Optic Hood. Protective Optic Cover Included. Compatible With Most Optics Ready Pistol Systems Magnification: 1X Length: 1.78" Weight: 1.10 Oz Battery Size: Cr2032 3V Reticle: 4 MOA Red Dot Proofs: IPX7 Waterproof Optic Coating: Multi Coated