TRUGLO Red-Dot Crossbow 30Mm 3-Dot Sight Click windage and elevation adjustments. Adjustable rheostat for brightness control. 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. Includes all the award-winning features of our Traditional RedDot Sight Series. Lifetime Limited Warranty.