The Rival Arms X1 Micro Reflex Red Dot Sight features a 3 MOA red dot for fast target acquisition. The automatic "wake" and "sleep" modes preserve battery life for years of reliability. The X1 micro remembers the last used brightness setting when powering on. FeaturesLarger 29mm objective lens for wider field of viewMulti-coated Objective LensRMR Compatible mounting systemCompatible with optic-ready pistolsIncludes Picatinny mountDigital push-button brightness controls10 brightness settingsMotion-sensing "wake" featureUnlimited eye reliefIPX7 water-resistant ratingLens cover included50,000+ hour battery life