Instant on-target accuracy for any firearm from handguns to shotguns. A great choice for 3-Gun and wing shooting and any use from patrol to plinking. Multiple reticle options massive battery life and 4 different reticles make FastFire 4 the most versatile red dot reflex you can mount. - Everything you loved about the FastFire 3 plus... - Toggle between four different reticle options - Larger sight window for faster target acquisition - Longer battery life - up to 26k hours on medium brightness - Brighter aiming point - Optional screw-on weather shield for a completely enclosed sight - Auto-Brightness & Auto-shutoff after 8 hours - Lightweight at 1.6 oz - Magnification 1x - Reticles FastFire 4 Multi-Reticles - Reticle Colors Red - Finish Matte - Mounting Type Picatinny Mount / Docter Optic - Eye Relief Unlimited - Click Value 1 MOA - Elevation Adjustment Total Capability 90 MOA - Length 1.9 in. - Weight 1.6 oz. - Illumination Control Push-button - Illumination Settings 3 manual brightness levels; automatic setting reactive to environment - Battery CR1632