Instant dot-on-target accuracy for any firearm from handgun to shotgun, any sport from 3-Gun to wing shooting, any use from patrol to plinking. Loads of reticle options, massive battery life and 4 different models make FastFire the most versatile red dot reflex you can mount.Features:Toggle between 4 different reticle optionsLarger sight window for faster target acquisitionLonger battery life - up to 50k hr on medium brightnessBrighter aiming pointOptional screw-on weather shield for a completely enclosed sightAuto-Brightness and Auto-shutoff after 8 hrLightweight at 1.6 oz