Manufaturer Part Number: SORMDC60The romeo-mdc open reflex sight for compact pistols.Features the shield rmsc mounting footprint; glass aspherical lens; 12 brightness settings- 10 day/2 night; top-mounted battery, with no need to remove the optic from the firearm to change the battery and convenient dual side brightness buttons.Magnification: 1xObjective: 26mmDot Size: 6 MOALength: 1.58"Weight: 1.08 ozReticle: Illuminated Red DotProofs: Fog/WaterproofOptic Coating: SpectraCoatWindage Elevation: Adjustable