The Cyelee CAT PRO red dot Micro Red Dot Sight is an ultra-compact open-reflex sight, designed for compact and subcompact pistols. It offers robust reliability, purpose-built for duty and professional use, and ready for any environment. Improved target acquisition, intuitive controls, and innovative electronics allow you to defend yourself, and others, confidently. The CAT PRO red dot is easily installed on optics-ready slides or mounts compatible with Shield RMSc or JPoint footprints. It is equipped with advanced MDS Mode(Motion Deactivated Standby) technology, to ensure it's also ready to go in the split second you are! While on, the sight automatically sleeps after 4 minutes of non-activity but quickly comes back to life as soon as it is moved. Its high-quality potted and waterproof electronics, and our own "Super LED" ensure up to 50,000-hours battery runtime.