The OMEGA Speedmaster Moonwatch Hesalite 42mm (Ref. 310.32.42.50.01.001) presents the most historically faithful interpretation of the legendary chronograph worn during all six moon landings through period-correct hesalite crystal that replicates the exact material used during the Apollo missions. Inspired by the 4th generation Speedmaster style, the asymmetrical case, black step dial, and famous dot over 90 on the anodised aluminium bezel ring maintain authentic design references whilst the embossed Seahorse medallion caseback replaces the sapphire exhibition back found on other current Moonwatch variants.

At 42mm with 13.18mm thickness through stainless steel construction, this provides authentic Moonwatch proportions at just 91g total weight, with the hesalite crystal contributing to a lighter wearing experience consistent with the original Apollo-era watches. The coated nylon fabric strap with reinforced fabric surface and grained calf leather underside provides comfortable daily wear appropriate to the watch’s historical character.

The Co-Axial Master Chronometer Calibre 3861 delivers 50-hour power reserve with 15,000 gauss magnetic resistance through METAS certification whilst the manual-winding chronograph with Co-Axial escapement provides precise timing through small seconds subdial, 30-minute recorder, and 12-hour recorder alongside the central chronograph function. The free-sprung balance with silicon balance spring and rhodium-plated finish with straight Geneva waves complete the movement specification.

The hesalite crystal with OMEGA logo in the centre and solid Seahorse medallion caseback define this variant within the Moonwatch range, prioritising historical authenticity over the transparent caseback found elsewhere in the collection. At 50m water resistance the watch covers everyday requirements whilst delivering the full Master Chronometer specification beneath its period-correct exterior.