Sig Sauer Romeo-X Pro 1x 24mm Red Dot - 2 MOA Red Dot / 32 MOA Circle - Introducing the new ROMEO-X optics family. Built from the ground up with industry-leading functionality, the ROMEO-X is the result of Sig Sauer's experience developing durable red-dot technology that's trusted by the military and put into a streamlined civilian package. 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. Inspired by MIL-SPEC ROMEO-M17; CNC Machined 7075 Aluminum Housing; Patent-Pending Beryllium Copper Flexure Arm; MOTAC (Motion Activated Illumination); Circle Dot With Individually Selectable 2 MOA Dot & 32 MOA Circle; Low Deck Height for Standard-Height Iron Sight Co-Witness; 20,000 Hour Battery Life With Side Load Battery; 15 Illumination Settings Including 3 Night Vision; Assembled in the U.S.A. Mount Type: R1P/R2 and all DeltaPoint Pro; Distortion Free Aspherical Lens; Open Emitter; 10mm Rated;