Trijicon AccuPower 2.5-

Illuminated reticle powered by a CR2032 battery. Eleven brightness settings with an Off feature between each brightness setting. Aircraft grade aluminum housing. Multi-coated lenses provide superior clarity and light gathering capabilities with zero distortion. Reticle size remains constant as magnification increases which provides a more exact aiming point at higher magnifications. Easy-Focus eyepiece. Easy to set adjusters. No tools needed to float the adjusters back to zero. Waterproof to 10 feet. Dry-nitrogen filled to eliminate fogging.