310.55.42.50.13.001Ref

Unveiled in 2023, the OMEGA Speedmaster Moonwatch Professional 310.55.42.50.13.001 is a precious-metal Moonwatch with an 18K Sedna Gold case measuring 42 mm, featuring twisted lugs, crown guards, sapphire crystals on both sides, and a diamond-set bezel that replaces the tachymeter while keeping the classic Speedmaster bezel profile. The green stepped dial has applied Sedna Gold hour markers and logo, with hands and indexes matching the case, and a tri-compax chronograph (small seconds, 30-minute, 12-hour). Power is supplied by the manual-winding, METAS-certified Calibre 3861 (15,000 gauss, meets precision/power reserve standards) visible through the sapphire caseback with rhodium-plated and Geneva-style finishing, all on an 18K Sedna Gold bracelet with polished centre links and a comfort-adjustment foldover clasp, water-resistant to 50 metres.