The XOPTEK Red Dot Sight was designed to be used in conjunction with ELCAN Specter line of scopes as a lightweight auxiliary aiming device. It sports a brilliant reticle to serve as a precise aiming point for short to mid-range targets and is available in either 4 MOA or 6 MOA. The XOPTEK Red Dot has an average battery life of 34000 hours (at setting five) and features an auto-shut off at 8 hours.XOPTEK Red Dot Sight FeaturesSpecterDR Mount Plate includedAvailable in 4 MOA and 6 MOA reticles60 MOA reticle adjustment range34000 battery life (at setting five)