"The TruGlo TG8030B3 Crossbow Red Dot Sight (Camo) is an excellent choice for the sophisticated crossbow hunter. It is light, fast and easy to use in dim light. The brightness of the red dot can be adjusted to match any lighting condition using the 11-position click rheostat. The anti-reflection coated glass eliminates glare in bright light. This sight comes with an integral Weaver-style mounting system that will fit standard 7/8-inch Weaver scope rails.Other features of the Crossbow 1x30 Sight include optical-quality all-weather flip-up lens caps, 3-dot crossbow reticle, an integrated lanyard system to prevent loss of screw-down windage and elevation adjustment dust caps, waterproof housing and multi-coated anti-fog lenses. The Crossbow Red Dot Sight includes flip-up lens caps and runs on a CR2032 battery (included).|Click windage and elevation adjustments|11 position rheostat for brightness control|Integrated Weaver-style mounting system|Multi-coated lenses|See-thru / flip-up lens caps, optical-quality / all-weather|Integrated lanyard system to prevent loss of screw-down W/E caps|Waterproof / Fogproof|3-Dot Crossbow Reticle"