Omega Seamaster Diver 300M Co-Axial Master Chronometer — Green Ceramic, 42mm

The Seamaster Diver 300M has been Omega's dive watch since 1993, and this green ceramic execution is one of the collection's most striking modern colorways — a laser-engraved wave pattern across the dial, carried through to a matching green ceramic bezel with a white enamel diving scale. The 42mm stainless steel case is built around Omega's in-house Caliber 8800, a Co-Axial escapement movement certified to Master Chronometer standard by METAS — meaning it's been independently tested for precision, power reserve, and resistance to magnetic fields exceeding 1.5 tesla.

Specifications

• Reference: 210.32.42.20.10.001
• Case: 42mm stainless steel (316L), 13.56mm height
• Movement: Automatic, Co-Axial Caliber 8800, Master Chronometer (METAS) certified, 55-hour power reserve
• Crystal: Domed sapphire, anti-reflective coating on both sides
• Water resistance: 300m (30 bar), helium escape valve
• Dial/Bezel: Green ceramic with laser-engraved waves; green ceramic bezel with white enamel scale
• Strap: Green rubber, stainless steel pin buckle
• Year: 2024

Condition notes

• Overall condition: Excellent. Minimal wear, no notable flaws to disclose.
• Crystal: Clean, with no scratches and no AR coating wear.
• Strap: Original green rubber strap, currently fitted.
• Movement: Checked on a timegrapher and running strong and accurate.
• Papers: Included — the warranty card is dated 2024 and stamped by the original authorized dealer. The original presentation box is included.

This is a genuinely capable dive watch as much as it is a striking piece on the wrist — 300m of water resistance and a helium escape valve back up the Seamaster name, not just the look.

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