Compatible with Sig Sauer P320 optics-ready slides and DeltaPoint PRO footprints, the Sig Sauer ROMEO-X Pro 2 MOA Red Dot Open Reflex Sight is a duty-built red dot sight engineered to perform under challenging conditions without forfeiting clarity or quality. Inspired by the Mil-Spec ROMEO-M17 optics family, the ROMEO-X Pro boasts a lightweight and virtually indestructible forged 7075 aluminum housing with a patent-pending Beryllium Copper flexure arm for unparalleled shock resistance, lasting stability, and superior zero retention. The distortion-free aspherical lenses deliver incredible clarity with optimal light transmission, and the 2 MOA illuminated dot reticle, coupled with 15 user-selectable brightness settings (12 daylight, 3 night vision), ensures quick, intuitive target acquisition in any lighting condition. MOTAC motion-activated illumination technology automatically activates the reticle emitter when it senses motion for lightning-fast, hands-free performance in self-defense scenarios. The low deck height allows for effortless co-witnessing with standard-height iron sights, and simple push buttons deliver smooth, user-friendly manual power control. Operating on a single side-mounted CR1632 battery (included), the ROMEO-X Pro offers an impressive battery life of up to 20,000 hours and boasts an IPX7 waterproof rating for consistent performance in virtually any tactical, duty, or self-defense application.