Omega Seamaster Diver 300M 42mm — Ref. 210.22.42.20.01.002

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The fourth-generation Seamaster Diver 300M brought back the wave dial and raised the bar across the board — and this two-tone reference is one of the best executions in the lineup. The stainless steel case is accented with 18K Sedna gold on the crown, helium escape valve, and the diving scale on the black ceramic bezel, giving it a warmth that regular two-tone watches don't touch. Sedna gold is Omega's proprietary rose gold alloy — it uses palladium and copper to hold its color far longer than traditional rose gold. The black ceramic dial carries a laser-engraved wave pattern that catches light at different angles without being loud about it, and the Sedna gold sword hands and indexes are filled with white Super-LumiNova for serious legibility underwater. At 300 meters of water resistance with a helium escape valve, this is a legitimate dive tool — but on the black rubber strap with the folding clasp, it wears just as well with a blazer as it does with a wetsuit. The Caliber 8800 underneath is METAS Master Chronometer certified, anti-magnetic to 15,000 gauss, and visible through the sapphire exhibition caseback.

Specifications

• Model: Seamaster Diver 300M Co-Axial Master Chronometer
• Reference: 210.22.42.20.01.002
• Caliber: Omega 8800 — 35 jewels, 25,200 vph (3.5 Hz), Co-Axial escapement, METAS Master Chronometer
• Case Material: Stainless Steel with 18K Sedna Gold accents
• Case Diameter: 42mm
• Case Thickness: 13.56mm
• Lug-to-Lug: 49.5mm
• Lug Width: 20mm
• Bezel: Black ceramic, unidirectional rotating with 18K Sedna Gold diving scale
• Crown: Screw-down, 18K Sedna Gold
• Crystal: Domed sapphire with anti-reflective treatment on both sides
• Caseback: Sapphire crystal display, screw-in with wave-edged design
• Dial: Black ceramic with laser-engraved wave pattern, 18K Sedna Gold sword hands and indexes with white Super-LumiNova, date window at 6 o'clock
• Strap: Black rubber with folding clasp
• Helium Escape Valve: Yes, 18K Sedna Gold
• Movement: Automatic
• Power Reserve: 55 hours
• Water Resistance: 300 meters (30 bar)
• Anti-Magnetic: 15,000 gauss
• Functions: Hours, minutes, seconds, date (6 o'clock)

Condition Report

• Case: 10/10
• Bezel: 10/10
• Crystal: 10/10
• Dial/Hands: 10/10
• Strap: 10/10
• Clasp: 10/10
• Caseback: 10/10

Polishing Status: Unpolished

Delivery Contents

• Complete set — box, papers, warranty card, pictogram card, manuals

Please refer to photos for full contents.

Service & Authenticity

• Timegrapher: 344 amplitude (measured at 52° lift angle)
• Service History: No known service history
• Warranty: Expired — card dated June 2021, coverage ended June 2026 (Omega 5-year warranty)

Shipping & Legal

• Based in: Cullman, AL
• We serve buyers in Nashville, Atlanta, and Memphis — insured shipping or in-person meetup available.
• Shipping: Fully insured overnight with tracking provided
• Shipping within CONUS only
• Buyers are responsible for any applicable taxes and duties
• Watch is sold in accordance with United States laws and regulations

All watches are inspected by our watchmakers for condition, authenticity, and functionality before sale. Feel free to reach out via messenger with any questions.