The Sightmark Ultra Shot Plus Red Dot is designed for durability and reliable performance. It features cast aluminum alloy housing with an extra protective shield. The case is shockproof, with IPX4 water and weather resistance. This red dot reflex sight can switch between red and green illumination modes. Its CR2 battery power provides up to 1,000 continuous hours of operation. Enjoy unlimited eye relief and a wide field of view with the Sightmark Ultra Shot Plus Red Dot sight.