Omega

Seamaster Diver 300M Chronograph Master Chronometer

Name: Omega Seamaster Diver 300M Chronograph Master Chronometer
Brand: Omega
SKU: 210.30.44.51.03.001

210.30.44.51.03.001

A certified Master Chronometer chronograph built for the deep.

Estimated market value

$7,300

Confidence: High

An estimate from current market data — not an offer. Your actual value depends on condition, completeness, and authentication.

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Overview

The Omega Seamaster Diver 300M Chronograph Master Chronometer (ref. 210.30.44.51.03.001) pairs a 44 mm stainless steel case with a striking blue ceramic dial bearing Omega's signature wave pattern. Powering the watch is Calibre 9900, a co-axial escapement movement that has earned Master Chronometer certification from METAS, the Swiss Federal Institute of Metrology. The combination places it among the most rigorously tested chronograph movements in modern Swiss watchmaking.

History

Omega relaunched the Seamaster Diver 300M collection in 2018 with a thorough technical and aesthetic overhaul, introducing ceramic dials and METAS-certified movements across the range. The chronograph variant followed as a flagship expression of the new generation, continuing a lineage of professional dive chronographs that stretches back through decades of Seamaster history. Collector interest has remained strong, in part because the reference represents the first time the Diver 300M chronograph was offered with full Master Chronometer credentials.

Notable points

Calibre 9900 is a bi-compax chronograph movement featuring a co-axial escapement and a silicon balance spring, contributing to its resistance to magnetic fields exceeding 15,000 gauss.
METAS Master Chronometer certification requires the movement to pass eight distinct tests covering precision, magnetic resistance, and water resistance — a standard more demanding than COSC chronometer certification alone.
The blue dial is crafted from ceramic and features Omega's iconic horizontal wave pattern, a design element that has defined the Seamaster Diver 300M aesthetic since the 1990s.
The 44 mm stainless steel case is rated to 300 metres of water resistance, consistent with the professional diving heritage of the Diver 300M line.
A unidirectional rotating bezel with a ceramic insert completes the dive-watch specification, offering both functional legibility and scratch resistance.