For this 41.00 mm model, the stainless steel case features a hard metal (tungsten carbide) bezel. The caseback includes a Central Observatory medallion set in scratch-resistant sapphire crystal. The black "Pie Pan" dial features a month of the year on each of its facets. There is an 18K white gold Constellation star and OMEGA logo, and 18K white gold facetted hands and indexes which have been filled with Super-LumiNova. This watch has a black leather strap and is driven by OMEGA's Co-Axial Master Chronometer Annual Calendar Calibre 8922, featuring revolutionary anti-magnetic technology.