Built for those who demand rugged reliability in any condition, the ROMEO2 large shroud is designed to perform without compromise. Engineered with a full-length steel shroud and enclosed lens system, it protects the emitter from dust, debris, and moisture, ensuring peak performance in the harshest environments. Featuring 3 MOA and 6 MOA reticle options, 15 brightness settings, and a high-efficiency LED emitter with a precision-molded aspheric glass lens, the ROMEO2 delivers unparalleled clarity and target acquisition. Its 7075 aluminum housing and steel shroud provide extreme impact resistance, while SIG's MOTAC technology extends battery life up to 25000 hr by powering on with movement. Compatible with all SIG pistols featuring the PRO-CUT slide, the ROMEO2 Large Shroud is the ultimate red dot sight for professionals who refuse to compromise. The molded glass aspheric lens with high-performance coatings offers superior light transmittance and zero distortion for a clearer sight picture Included accessories such as the MAGNETAC rubber sight cover, FIX-IT-STICKS multi-tool, lens pen and half shroud provide everything you need for maintenance and protection Can be directly mounted to any Sig pistol with the pro slide cut, offering a secure, compatible setup for your firearm Spring-loaded side battery tray is released by a push-button, eliminating the need to remove the optic to change the battery MOTAC (motion activated illumination system) provides instant illumination when motion is sensed and powers off when inactive to conserve energy The MAGNETAC magnetic activation system automatically powers off the optic when holstered and powers it back on when drawn for seamless functionality DARC (dark adaptive reticles and coatings) technology provides ideal reticle brightness and target clarity when using GEN 3+ night vision devices, enhancing low light performance Designed, developed, tested and assembled in the U.S.A., ensuring high-quality craftsmanship and reliable performance