Barnett Premium Red Dot Sight Simplifies shooting experience Allows you to keep both eyes open while shooting Offers varying dot intensity Barnett's Premium Red Dot Scope is simple to use, easy to see and extremely accurate. It is compatible with both Recurve and Compound Barnett Crossbows. This dot reticle features 11 dot intensity settings with integrated 3/8" or 7/8 mounts. Includes CR2032 battery.