"Apex Gear 3-Dot Red Dot Crossbow Scope features Special 3-dot reticles, which include descending diameter MOAs for multi-distance shooting. A dual-color rheostat allows for multiple brightness settings in green or red. Other features include click windage and elevation adjustments, integrated Weaver-style mounting system and a see-thru/ flip-up lens cap (optical quality/all weather). The integrated lanyard system prevents loss of screw-down W/E caps. A removable sunshade is included.|Spare battery storage compartment. Spare battery included (3V-CR2032)|Click windage and elevation adjustments|Integrated Weaver-style mounting system|See-thru / flip-up lens caps, optical-quality / all-weather|Integrated lanyard system to prevent loss of screw-down W/E caps|30mm tube design"