Omega
Seamaster Professional 300M
2255.80.00
The wave-dial 300M that defined late-quartz-era Seamaster elegance.
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Overview
The Omega Seamaster Professional 300M reference 2255.80.00 is a 41 mm stainless-steel diver produced between 1999 and 2007. It is distinguished by its blue wave-pattern dial, a signature aesthetic of the Seamaster 300M family that became one of the most recognisable dial treatments in late-twentieth-century sports watchmaking. Power comes from the Omega calibre 1120, an automatic movement built to the brand's robust diving standards.
History
The Seamaster Professional 300M line was relaunched to wide acclaim in the early 1990s and quickly became a cornerstone of Omega's sports catalogue. Reference 2255.80.00 represents the line's mature expression during its second decade, retaining the helium escape valve, unidirectional rotating bezel, and water resistance to 300 metres that defined the family. The reference remained in production through the mid-2000s, bridging the original generation and the subsequent co-axial-equipped models. Today it is regarded as a clean, wearable entry point into vintage Seamaster collecting.
Notable points
- 41 mm stainless-steel case with screw-down crown and helium escape valve, rated to 300 m water resistance.
- Blue wave-pattern dial — a hallmark of the Seamaster 300M family and one of the most iconic dial designs of its era.
- Powered by Calibre 1120, Omega's automatic movement derived from the ETA 2892-A2 base, known for reliability and serviceability.
- Produced from 1999 to 2007, placing it in the final generation before the line transitioned to co-axial escapement movements.
- Unidirectional rotating bezel with 60-minute graduation, fulfilling ISO dive-watch standards.
Specifications
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