You get 4 awesome options for shooting accuracy. Use the rear selector to switch between 4 different reticles on this Red Dot Reflex Sight... there's one for every occasion! Features a 100% safe, battery-powered red LED light to point wherever you're aiming, this tool helps you train your eye on dead-center accuracy, every time. You control brightness with a 7-position rheostat knob... no matter your environment, you can always find a mode that's easy to see. And it's built tough too, with a black or silver anodized aluminum body. Comes with an integrated weaver-style mount and tool for easy attachment.