Omega
Seamaster 300 Master Co-Axial
233.30.41.21.01.001
A modern diver built on vintage soul and Master Chronometer precision.
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Overview
The Omega Seamaster 300 Master Co-Axial (ref. 233.30.41.21.01.001) is a 41 mm stainless steel diver that revives the spirit of the original 1957 Seamaster 300 through a distinctly vintage-inflected aesthetic. Its black dial, broad arrow hands, and lollipop seconds hand recall mid-century professional dive watches while housing thoroughly contemporary engineering. The reference was produced from 2014 to 2021, bridging the gap between heritage design and Omega's most advanced movement technology of the era.
History
Omega introduced the modern Seamaster 300 line in 2014 as a tribute to its 1957 professional diver, coinciding with a broader industry interest in heritage reissues. Reference 233.30.41.21.01.001 was among the inaugural pieces, powered by the Calibre 8400 — one of the first movements to receive Master Chronometer certification from METAS, the Swiss Federal Institute of Metrology. The line ran through 2021, during which time it earned a strong following among collectors who valued the combination of vintage design language and modern anti-magnetic performance.
Notable points
- Calibre 8400 was among the first movements certified to the METAS Master Chronometer standard, guaranteeing accuracy of 0/+5 seconds per day and resistance to magnetic fields of 15,000 gauss.
- The black dial adopts a vintage-style treatment with a warm, slightly textured finish that references Omega's mid-century professional dive watches.
- Signature period-correct details include broad arrow hands, a lollipop seconds hand, and a domed hesalite-style crystal on certain variants.
- The 41 mm stainless steel case offers 300 metres of water resistance, consistent with the model's professional diver heritage.
- Co-Axial escapement technology reduces friction and extends service intervals compared to traditional lever escapements.
Specifications
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