Manufaturer Part Number: SOR30800Developed in collaboration with team sig captain, max michel, and already established as an advantage in the 2019 competitive season.The romeo3max pro is a compact, open reflex sight featuring a 31 mm wide, round lens design for superior field-of-view, a special red-notch filter for vivid red dot and unrivaled optical clarity, with a 8 moa dot size for rapid target engagement, 15 illumination intensity levels, motac activation, and up to 20,000 hours of runtime.Dependable waterproof (ipx-7 rated for complete water immersion up to 1 meter) and fog proof performance.Battery Size: CR1632Magnification: 1xObjective: 31 mmEye Relief: UnlimitedDot Size: 8 MOALength: 1.83"Weight: 1.10 ozReticle: 8 MOA Red DotAdjustment Size: 1 MOAProofs: Waterproof/Fog ProofOptic Coating: LensArmor/SpectraCoatWindage Elevation: Adjustable