
Ref. 210.92.42.20.01.003 · Diver
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Omega
An Omega Co-Axial Master Chronometer automatic, anti-magnetic to 15,000 gauss and METAS-certified, running at 25,200 vph with about 55 hours of power reserve. It powers date models across the Seamaster and Constellation lines.
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Seamaster Diver 300M collection · 7 watches






8 colorways
The forum market
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Omega on the secondhand market
+7.0%
2026 so far · +0.9% to +13.8% · 42 matched watches
In line with the index
Divers as a group: +6.1% · 367 matched watches
Year-by-year readings →Owners widely praise the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm for its impressive detail, versatile design that bridges toolish and elegant, and satisfying bezel action. Reviewers highlight its wearability, with the 42mm case and 13.7mm thickness considered just right, and note the white ceramic dial with red accents pops. Owners also commend its case finishing and legible dial with bold indices, with one owner considering it a timepiece that can be passed down. The Omega 8800 movement is recognized for its precision and magnetic resistance, offering a 55-hour power reserve. Some owners find the black dial lacks shine indoors and wish for brighter hour markers, while one reviewer notes the ceramic case is prone to shattering and the exhibition case back has sharp edges. The mesh bracelet's clasp is criticized by one reviewer for being bulky, and another points out thickness around the clasp as a drawback.
On real wrists
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