Featuring a digital switch control with six variable brightness levels for daytime use and six settings in night vision mode, the Sightmark Ultra Shot M-Spec Reflex Sight is built for adaptation to any environment a shooter finds themself in. Its magnesium alloy housing offers exceptional durability along with a battery life of up to 1,000 hours of superior functionality. An integral adjustable quick detach weaver mount makes mounting and dis-mounting a breeze. The device features a protective hood that shields it from impact, a shock-proof, fully submersible frame for up to .50 caliber recoil and water resistance, and a Circle-Dot reticle for maximum visibility. Equipped with dual-pane glass and a parallax-corrected lens system, the Ultra Shot M-Spec allows shooters to sight accurately from 10 yards to infinity.