310.32.42.50.01.001Ref

Launched in 2021 as part of the renewed Moonwatch Professional series, the Speedmaster 310.32.42.50.01.001 features a 42 mm stainless steel asymmetrical case (47.50 mm lug-to-lug, 13.18 mm thick, 5 bar water resistance), a black anodised aluminium bezel with dot-over-90, and a hesalite front crystal with a solid steel caseback. The black step dial follows the fourth-generation layout with printed markers, printed logo, and white chronograph scales, with a tri-compax arrangement (small seconds, 30-minute, 12-hour). Inside is the manual-winding, METAS-certified Calibre 3861 (3 Hz, ~50-hour reserve, 15,000 gauss, rhodium-plated), delivered on a black coated nylon fabric strap with a steel foldover clasp.