The Sightmark Ultra shot R-Spec Reflex Sight delivers a crisp field of view with an advanced anti-reflective scratch resistant lens system 4 red and green reticle options with10 brightness settings parallax correction (beyond 25 yds) 1 MOA Click adjustments (120 MOA of travel) Interlok internal locking adjustment system and a long reliable battery life from 200 to 2000 hours on a sincle CR123 battery. Includes a quick-detach picatinny mount adjustment tools CR123A battery operation manual and neoprene cover.