Omega
Seamaster 300 Co-Axial Master Chronometer
234.30.41.21.01.001
A modern diver built on Seamaster heritage and Master Chronometer precision.
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Overview
The Omega Seamaster 300 Co-Axial Master Chronometer (ref. 234.30.41.21.01.001) is a 41 mm stainless steel diver that distils more than six decades of Seamaster 300 heritage into a contemporary, rigorously certified package. Its black sandwich dial reproduces the layered, vintage-lume aesthetic of the original 1957 reference while housing one of Omega's most advanced movements. The result is a tool watch that bridges archival design with present-day horological standards.
History
The Seamaster 300 line traces its roots to Omega's 1957 professional diver, a watch issued to military and civilian divers during the early years of scuba exploration. Omega revived the Seamaster 300 name in the mid-2010s with a modernised case and Co-Axial escapement, and the current generation — introduced in 2021 — elevated the specification further by adopting the Master Chronometer standard. That certification, administered jointly by Omega and METAS (the Swiss Federal Institute of Metrology), requires the movement to pass eight stringent tests covering precision, magnetic resistance, and water resistance.
Notable points
- Calibre 8912 is certified to the METAS Master Chronometer standard, guaranteeing a daily rate of 0 to +5 seconds and resistance to magnetic fields of at least 15,000 gauss.
- The sandwich-style black dial uses a two-layer construction to recreate the luminous indices of vintage Seamaster 300 references, giving depth and a warm patina-like glow.
- The 41 mm stainless steel case retains the broad arrow hands and domed hesalite-style proportions associated with the 1957 original, reinterpreted in a modern context.
- Co-Axial escapement geometry reduces friction and the need for lubrication compared with a conventional lever escapement, contributing to long-term rate stability.
- The reference sits within Omega's broader Seamaster 300 family alongside versions in Sedna gold and titanium, making the steel configuration the most accessible expression of the line.
Specifications
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