Omega
Seamaster Diver 300M Co-Axial
212.30.41.20.01.003
Ceramic precision meets deep-sea heritage in 41 mm of stainless steel.
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Overview
The Omega Seamaster Diver 300M Co-Axial reference 212.30.41.20.01.003 represents a mature expression of Omega's long-running professional diver line, pairing a 41 mm stainless steel case with a striking black ceramic dial rendered in the collection's signature wave pattern. Powering the watch is Calibre 8500, Omega's in-house Co-Axial movement, which brought a new level of manufacture credibility to the Seamaster 300M family. Produced from 2012 to 2018, the reference occupies a significant chapter in the modern Seamaster story.
History
The Seamaster Diver 300M line traces its roots to the 1990s, when Omega repositioned the Seamaster as a serious professional diver's tool with broad popular appeal. The Co-Axial generation, introduced in the early 2010s, marked a pivotal upgrade by replacing the earlier ETA-based movements with Omega's own Calibre 8500, signalling the brand's broader push toward in-house manufacture. Reference 212.30.41.20.01.003 was produced throughout much of the decade before the line was comprehensively redesigned in 2018, making this generation a well-defined collector chapter. Its six-year production run gives it a stable presence in the secondary market and among enthusiasts who prize the Co-Axial transition era.
Notable points
- Black ceramic dial: the wave-pattern surface is formed from ceramic, offering superior scratch resistance and long-term colour stability compared to earlier lacquered dials.
- Calibre 8500: a fully in-house, Co-Axial escapement movement featuring a free-sprung balance with silicon balance spring, reducing sensitivity to magnetic fields and improving long-term rate stability.
- 41 mm stainless steel case: sized at the upper end of the Co-Axial 300M generation, the case provides a substantial wrist presence while retaining the helium escape valve and 300-metre water resistance of a true professional diver.
- Transitional generation: this reference bridges the ETA era and the later Master Chronometer 300M, making it historically significant within the Seamaster lineage.
- Unidirectional rotating bezel: fitted with a ceramic insert, the bezel combines the functional dive-timing requirements of ISO 6425 with the durability benefits of modern ceramic technology.
Specifications
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