7075 Aluminum housing with integrated rear sight notch (Compact Model includes fiber optics); Extremely low deck height, allowing a full sight picture and co-witness with standard-height sights; High-efficiency point source LED emitter with 2 MOA dot / 32 MOA circle (circle/dot) or 6 MOA dot reticle; Independent brightness adjustment buttons that are recessed within a protective plate; 15 brightness settings (12 Daylight / 3 NV); Side-mounted CR1632 battery compartment with threaded cap for easy battery changes without the need to remove the optic from the firearm; Minimum continuous runtime of 20,000 hours, at medium brightness setting (Dot Only); MOTAC (Motion Activated Illumination) that powers up when it senses motion and powers down when it does not; D.A.R.C. (Dark Adaptive Reticles and Coatings) technology provides ideal reticle brightness and target clarity while using GEN3+ night vision devices; Dependable waterproof performance (IPX-7 rated for complete water submersion up to 1 meter)