The dramatic and enduring design of the OMEGA Constellation is characterized by its famous half-moons, as well as the “claws” on the side of the case. This stainless steel and 18k Sedna™ gold model features a polished black ceramic bezel with Roman numerals in Ceragold™, a silk-embossed rhodium-grey dial and a date window at the 6 o'clock position. The hands, OMEGA logo, Constellation star and facetted indexes are all in 18k Sedna™ gold. Presented on a grey leather strap with rubber lining, this timepiece is driven by the OMEGA Co-Axial Master Chronometer Calibre 8900, visible through the domed scratch-resistant sapphire crystal. Water resistant to 50 meters. Case diameter: 41 mm. Between lugs: 24.2 mm. Case thickness: 13.5 mm. Weight: 113 g.