Omega Speedmaster Moonwatch Professional Steel, black step dial

The current hesalite Moonwatch, the direct continuation of the Speedmaster Professional line a contemporary buyer cross-shops. Introduced in January 2021, reference 310.30.42.50.01.001 keeps the 42mm asymmetrical steel case, the domed hesalite crystal and the closed caseback, now driven by the hand-wound Co-Axial Master Chronometer caliber 3861, certified by METAS, with about fifty hours of reserve. The black stepped dial sits beneath an aluminium tachymeter bezel marked Dot over Ninety, on a steel bracelet of five arched links per row.