The SHIELD SIGHTS RMSx Reflex Mini XL Lens Red Dot Sight was specifically designed for competitive shooters in search of a larger lens. The RMSx's lens is 80% larger than SHIELD's current Mini-Sight range and comes with a crystal-clear glass lens for a nice, bright sight picture. The large lens helps you locate the dot incredibly quickly and makes it easier to stay on target during recoil. The RMSx features SHIELD's new increased-efficiency LED and uses the same proven electronics that have delivered the unfailing durability shooters have come to expect from SHIELD. Fits the classic SHIELD footprint. Aluminum housing. Large octagonal glass lens with anti-reflective, color-free coating that minimizes visible signature. Up to 20,000 hrs. battery life on one CR2032 battery. IP67 waterproof rated. Specifically designed for competitive shooting Glass lens is 80% larger than SHIELD's current Mini-Sight range Crystal-clear glass lens with anti-reflective, color-free coating New increased-efficiency LED Up to 20,000 hrs. battery life on one CR2032 IP67 waterproof rated