The Sig Sauer Romeo-RS Pro is a professional-grade red dot sight featuring a 1x31mm objective lens with a precise 3 MOA red dot reticle in a durable black finish.Sig Sauer Romeo-RS Pro Red Dot Sight (SOR02030)1x magnification with 31mm objective lens3 MOA red dot reticle for precision targetingSpectraCoat advanced optic coating for enhanced clarity70 MOA windage and elevation adjustment rangeCompact design at 1.83 inches length and 26.60 oz weightPowered by CR1632 battery for reliable performanceEngineered for tactical applications and precision shooting this optic delivers fast target acquisition and reliable performance in demanding conditions.