The Truglo Gobble Stopper Red Dot Sight is just what you need for turkey hunting. It features a reticle designed specifically for hunting turkeys with the illuminated ring representing a 24" circle at 30 yards, a detachable sunshade, flip-up lens caps and an integrated Weaver-style mount. The Gobble Stopper is covered by a limited lifetime factory warranty. Power supply is a single CR2032 3V battery.FeaturesSpecially designed reticle for turkey hunting Two choices of reticle color for contrast against any target / background (red and green) Detachable, extended sunshade eliminates glare from the front lens Spare battery storage compartment Main battery and spare battery included (3V-CR2032) Flip-up lens caps / lanyard system Lightweight / easy to mount Integrated Weaver-style mounting system