The Oberwerk XL MRF (Multi-Reticle Finder) projects an easy-to-see reticle, focused at infinity, that is selectable between 4 patterns (shown below), and 2 colors (red and green), with 5 brightness levels using a large easy-to-operate dial. The reticle can be seen from as close as a couple inches to more than a foot from behind. It’s helpful for quickly lining up the binocular with a distant target. Steer the binocular so the reticle pattern is on your target, then when you look through the binocular eyepieces, your target will be in the middle of the field of view. The XL MRF has a red-anodized aluminum body which matches the red trim on XL eyepieces, as well as the trim rings on the XL-ED models. Mounts directly to the XL Series Picatinny rail handle. CR2032 lithium battery included.