Omega Speedmaster Moonwatch Professional 3861 Hesalite 310.30.42.50.01.001 2021 [Preowned] 126234 a design choice that emphasizes

a design choice that emphasizes the watch’s clean lines and focuses all attention on the unique color

40mm  Bracelet / Strap :  Steel   Features :  100m depth rating

seamlessly integrated to provide everyday practicality without disrupting the design’s symmetry

a self-winding mechanical movement renowned for its reliability and precision

symbolic design elements

Omega Speedmaster Moonwatch Professional 3861 Hesalite 310.30.42.50.01.001 2021 [Preowned] 126234 a design choice that emphasizesOverview For over five decades, the Speedmaster Professional was defined by its refusal to change. From the 861 to the 1861, the architecture remained functionally conservative. The introduction of the Calibre 3861 in 2021 ended that lineage. By integrating the Co Axial escapement and a silicon balance spring, Omega didn't just update the movement; they solved the "friction problem" that had dictated Speedmaster service intervals since 1968. The 3861