Reference131.63.41.21.01.001BrandOmegaCollectionConstellationDial Size41 MMDial ShapeRoundCase MaterialYellow goldDiamondsWithout DiamondsStrap BraceletLeather strap with rubber liningGenderMenMovementAutomaticGlassDomed scratcha??resistant sapphire crystal with antia??reflective treatment on both sidesWater Resistance5 BarBrand Warranty5 YearsDESCRIPTIONThe dramatic and enduring design of the OMEGA Constellation is characterised by its famous half-moons, as well as the a??clawsa?? on the side of the case.This 41 mm 18K yellow gold model features a polished black ceramic bezel with Roman numerals in Ceragolda???, a sun-brushed black dial and a date window at the 6 o'clock position. The hands, OMEGA logo, Constellation star and facetted indexes are all in 18K yellow gold.Presented on a black leather strap with rubber lining, this timepiece is driven by the OMEGA Co-Axial Master Chronometer Calibre 8901, visible through the domed scratch-resistant sapphire crystal.