Ideal for shotguns rifles crossbows handguns and more Truglo RedDot Sights feature a wide field of view for quick accurate target acquisition. The multi coated lenses produce 95 percent more light transmission while the antireflective interior eliminates stray light. The waterproof fogproof and shockresistant body allows for highquality optics in all weather. This sight has an integrated weaverstyle mounting system. Includes one 3V CR2032 battery.