Omega
Seamaster Diver 300M Co-Axial Master Chronometer
210.30.42.20.03.001
A modern diver's benchmark dressed in deep-ocean blue ceramic.
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Overview
The Omega Seamaster Diver 300M Co-Axial Master Chronometer (ref. 210.30.42.20.03.001) represents the thoroughly modernised generation of Omega's iconic dive watch line, introduced in 2018. Its 42 mm stainless steel case houses the in-house Calibre 8800, achieving Master Chronometer certification — the industry's most stringent standard for precision, magnetic resistance, and overall performance. The signature blue ceramic dial, rendered with a horizontal wave pattern, anchors the watch firmly in the Seamaster's long visual heritage.
History
The Seamaster Diver 300M lineage stretches back to 1993, when Omega relaunched the professional diver format that would later gain global recognition through its association with the James Bond film franchise. The 2018 redesign brought sweeping technical and aesthetic changes: the Co-Axial escapement was paired with the new Master Chronometer-grade movement, and ceramic was introduced for the dial surface. Reference 210.30.42.20.03.001 has since become one of the most recognised entries in the contemporary Seamaster catalogue, appreciated by collectors for balancing genuine dive capability with refined finishing.
Notable points
- Calibre 8800 is certified to METAS Master Chronometer standards, guaranteeing accuracy of 0 to +5 seconds per day and resistance to magnetic fields exceeding 15,000 gauss.
- The dial is crafted from blue ceramic, a harder and more scratch-resistant material than traditional lacquered metal, with a relief wave pattern pressed directly into the surface.
- Water resistance is rated to 300 metres, consistent with the Diver 300M designation and suitable for professional-level diving.
- The Co-Axial escapement reduces friction and the need for lubrication compared with a conventional lever escapement, contributing to long-term movement stability.
- A helium escape valve is integrated into the case, extending utility to saturation diving environments.
Specifications
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