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Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm

Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm

$8,000.00Price
Quantity
Out of Stock

Offered by Echelon Collective: this 2021 Omega Seamaster Diver 300M, reference 210.20.42.20.03.002. A 42mm two-tone stainless steel and 18K Sedna Gold dive watch. The polished blue ceramic dial features laser-engraved waves, date window at 6 o’clock, and 18K Sedna Gold skeleton hands and hour markers with white Super-LumiNova fill. The blue ceramic bezel carries a Ceragold diving scale. Powered by the Omega Master Chronometer Calibre 8800 — METAS certified, 55-hour power reserve, resistant to magnetic fields exceeding 1.5 tesla. Sapphire crystal caseback. 300-meter water resistance. Presented on the matching stainless steel and 18K Sedna Gold bracelet with fold-over clasp, comfort setting, and diver extension.

Who We Are

Echelon Collective is a U.S.-based luxury watch and asset brokerage focused on authenticity, transparency, precision, and discretion. Every watch is physically in our possession, inspected before listing, and photographed individually — we never use stock images.

Authenticity Guarantee

This watch is 100% guaranteed authentic. It is physically in Echelon Collective’s possession and was inspected before listing. No aftermarket parts have been disclosed unless specifically stated.

Condition / Full Transparency

We describe our watches conservatively and transparently.

Case: Very good — clean overall with light surface wear visible under close-up lighting.

Bezel: Excellent — no notable wear observed.

Crystal: Excellent — no notable wear observed.

Bracelet/Strap: Good — visible scratches on the back clasp and bracelet.

Caseback: Excellent — no notable wear observed.

Timekeeping: Details available upon request if tested.

No service history is included unless otherwise stated. No aftermarket parts have been disclosed.

What’s Included

  • Watch

  • Double Boxed — Original outer and inner boxes

  • Warranty card dated 2021

  • Master Chronometer card

  • Pictograms card

  • Operating instructions / manual

  • Omega card holder

  • Omega pouch

  • Extra links

If not listed here, it is not included.


1-Year Echelon Collective Mechanical Warranty

This watch includes a 1-year Echelon Collective mechanical warranty covering the proper mechanical operation of the movement under normal use. Service and parts support are available upon request.

24-Hour No-Questions-Asked Return Policy

You have 24 hours from confirmed delivery to inspect the watch and request a return for any reason. The watch and all supplied items must be returned in the same condition received.

Shipping

The watch ships fully insured with signature required from Melbourne, Florida. Professional packaging is used and overnight shipping is available. Tracking is provided after dispatch.

Why Buy From Echelon Collective

  • 100% authenticity guarantee

  • Watch is in hand and inspected

  • Real photos of the exact watch; no stock images

  • Transparent condition disclosure

  • 1-year mechanical warranty

  • 24-hour inspection / return period

  • Fully insured shipping

  • References available

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