Introducing the new ROMEO-X optics family. Built from the ground up with industry-leading functionality. The ROMEO-X is the result of our experience developing durable red-dot technology that's trusted by the military and put into a streamlined civilian package, inspired by the MIL-SPEC ROMEO-M17. Featuring a CNC 7075 aluminum housing, intuitive adjustment buttons, a side-mounted battery compartment, and an ultra-low deck height that gives you the ability to co-witness with standard height iron sights. Designed, tested, and assembled in the USA, the ROMEO-X boasts direct mounting footprints for your favorite optics-ready pistols. The SIG-LOC (Leverage Optimized Connection) system was first concepted during the development of the ROMEO-M17, revolutionizing pistol-mounted optic integration with a low-profile, ultra-tough connection between the optic and pistol slide. Designed for precision and strength, SIG-LOC ushers in a new era of expectation and performance for civilians and professionals with the ROMEO-X SIG-LOC pistol-mounted red dot. SIG-LOC is an innovative mounting footprint that establishes five points of contact between the slide and optic to eliminate shift in zero created by extensive shock from recoil and harsh impacts. The unique bottom-mounted design allows for a longer focal length that dramatically reduces parallax and reticle distortion to provide an incredibly forgiving shooting experience. With SIG-LOC, youre investing in technology that has been vetted and trusted by the most demanding users in the world, ensuring superior accuracy and reliability in every situation. Specifications for Sig Sauer Romeo-X 1x24mm Sig-Loc Reflex Red Dot Sight: Manufacturer: SIG SAUER Color: Black Fabric/Material: 7075 Aluminum Magnification: 1 x Objective Lens Diameter: 24 mm Illumination Type: LED Illumination Color: Red Brightness Settings: 15 Adjustment Click Value: 1.5 MOA Emitter Type: Enclosed Battery Type: Lithium Metal, CR1632 Battery Quantity: 1 Battery Life: 20000 hours Water Resistance Level: IPX-7 Gun Make: SIG Sauer Gun Model: SIG Sauer P365-FUSE, SIG Sauer P365 Length: 1.67 in Width: 1.2 in Height: 0.94 in Weight: 1.24 oz Red Dot Sights-Footprint: SIG-LOC Lens Type: Glass Gun Type: Pistol Adjustability: Adjustable Features of Sig Sauer Romeo-X 1x24mm 1.67in Reflex Red Dot Sight A fully enclosed, sealed and purged optical system, for ultimate protection from the elements Mounting screws secure optic from beneath the pistol slide, utilizing the SIG-LOC mounting system to create 5 total points of contact for the strongest lockup in the industry Longer focal length minimizes parallax and produces an ultra-sharp reticle while eliminating distortion Package Contents: Sig Sauer Romeo-X 1x24mm 1.67in Reflex Red Dot Sight SIG SAUER Infinite Guarantee