30mm DOT Size : 5 MOA Length : 3.8 Finish : Black Battery : CR 2032 3 volt. Ideal for shotguns, rifles, crossbows, handguns, and more, Truglo Red-Dot Sights feature a wide field of view for quick, accurate target acquisition. The multi coated lenses produce 95% more light transmission, while the anti-reflective interior eliminates stray light. The waterproof, fog proof, and shock-resistant body allows high-quality optics in all weather. Integrated Weaver-style mounting system. Includes one 3V CR2032 battery. 3.8 long. 5 MOA.