Ideal for hunters and target shooters, this Truglo 2x42 Traditional Red Dot Sight can be used on handguns, shotguns, muzzle loaders, crossbows, and paintball markers. The red dot reticle frames a target for a shot that is always accurate. With this sight, targets can be acquired quickly, and this sight works well in any light conditions, from bright daylight to the dark of night. Adjustments for windage and elevation can be made, and multicoated optics give the shooter a crystal-clear look at the intended target. Unlimited eye relief Wide field of view Flip-up lens caps / lanyard system Lightweight / easy to mount Integrated Weaver-style mounting system Ideal for shotguns, handguns, rifles, muzzleloaders, airsoft guns and crossbows Battery included (3V-CR2032)