Specifications

Reference: 210.30.42.20.01.005

Case Diameter: 42mm | Case Material: Stainless steel | Bezel: Black anodized aluminium bezel

Dial: Black aluminum dial that features the classic “wave” pattern

Crystal: Domed sapphire with anti-reflective treatment | Caseback: Exhibition sapphire

Movement: Omega Co-Axial Master Chronometer Caliber 8806 | Power Reserve: ~55 hours

Functions: Hours, minutes, central seconds; date

Bracelet: Stainless steel mesh bracelet | Water Resistance: 300m/30bar

Model Specifics:

Complete collector’s set with box, booklets, hang tags, and warranty card dated 4/12/2025. Excellent condition.

Omega Seamaster Diver 300M 210.30.42.20.01.005 (“Monochrome” Black) — History

The Omega Seamaster Diver 300M reference210.30.42.20.01.005 stands as a flagship example of Omega’s long-standing mastery of professional dive watches. Building on the Seamaster name launched in the late 1940s and the Diver 300M design introduced in the early 1990s, this reference represents the modern incarnation of a watch that blends robust performance with timeless style.

The Seamaster Diver 300M quickly distinguished itself with a wave-pattern dial, helium escape valve, and serious water resistance, earning a place on the wrists of professional divers and enthusiasts alike. With a contemporary redesign in the late 2010s, Omega elevated the model with advanced materials, refined proportions, and industry-leading movement technology, redefining what a luxury dive watch can be.

The 210.30.42.20.01.005 carries this heritage forward, offering a modern interpretation of the classic profile with refined aesthetics and next-generation mechanical performance.

Design and Build

This reference features a 42 mm stainless steel case that balances substantial presence with comfortable wearability. The unidirectional rotating bezel, elevates durability and resistance to scratches and wear, while also adding a refined textural contrast to the steel case.

The black aluminum dial is laser-engraved with the signature wave pattern that has become synonymous with the Seamaster line. Skeletonized, rhodium-plated hands and applied indexes are filled with Super-LumiNova, delivering outstanding legibility in daylight and low-light conditions. A domed sapphire crystal with anti-reflective treatment protects the dial and ensures clarity from every angle.

Movement: Co-Axial Master Chronometer Caliber 8806

At the heart of the Seamaster Diver 300M 210.30.42.20.06.002 is the Omega Co-Axial Master Chronometer Caliber 8806, an automatic movement that sets a high standard for precision and reliability.

Key attributes include:

• Automatic self-winding with Co-Axial escapement

• Approximately 55-hour power reserve

• High resistance to magnetic fields

• Master Chronometer certification for superior accuracy

• Finished and visible through a sapphire caseback

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