Outstanding Durability: Unique, patented housing shape diverts the force of an impact away from the lens, greatly increasing durability; True-Color, Multi-Coated Lens creates a wide-band light transmission for minimal change in target area color; Easily Adjustable Windage/Elevation: No need for special tools. 1 MOA per click; Dual-Illuminated Option: Tritium-phosphor lamp illuminates reticle in low-light conditions and fiber optics automatically adjust the brightness level and contrast to available light conditions; Adjustable LED Option: Easy-to-use buttons on the sides of the optic allow the user to adjust the illumination brightness, toggle between manual and automatic modes, and power down the RMR for storage; Multi-Platform-Friendly: Multiple primary applications including rifle, pistol, shotgun and carbine, or use as a secondary sight with a magnified optic; Built to Handle the Worst: Designed to be waterproof to 20 meters (66 ft); Upgraded Electronics: Ruggedized battery contacts and electronics ensure performance and survivability in harsh environments (Automatic LED and Adjustable LED RMR only); Battery Conservation Mode: Automatically adjusts aiming dot to ambient lighting conditions after 16.5 hours (Automatic LED and Adjustable LED RMR only)