Illustrative render — hero view of the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Omega · Seamaster Diver 300M · 42mm · steel and yellow gold · rubber · on Amazon

The yellow gold Seamaster, on the rubber strap.

This is the 2018 Seamaster Diver 300M with 18k yellow gold where the steel version has steel: the bezel ring and crown are gold, the skeleton hands and the raised markers are gold, and the blue ceramic bezel carries its diving scale in Ceragold, Omega’s process for setting gold into ceramic. The dial is the same blue ceramic with laser-engraved waves, the date at six, the helium valve at ten, and it ships on Omega’s blue rubber strap with a steel pin buckle. Inside is the calibre 8800, a Co-Axial Master Chronometer certified by METAS, with about 55 hours of reserve and 300 metres on the case. The least expensive two-tone Seamaster on this page. Sold on Amazon by a marketplace seller shipping from Japan.

This Seamaster on Amazon$5,000–$10,000 band

Case

42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs, steel with 18k yellow gold bezel ring and crown, unidirectional blue ceramic bezel with Ceragold scale, conical helium escape valve, sapphire caseback, 300m

Listing title: 42mm; photograph; Omega 210.22.42.20.03.001

Movement

Omega Co-Axial Master Chronometer calibre 8800, METAS certified, about 55 h

Listing title: Co-Axial Master Chronometer; Omega

Dial

Blue polished ceramic with laser-engraved waves, 18k yellow gold skeleton hands and raised indexes, white Super-LumiNova, date at 6

Photograph; Omega

Strap

Blue rubber strap, steel pin buckle; 116 g per Omega

Photograph; Omega

Reference

210.22.42.20.03.001

Model row

Seller

MS-TR JAPAN, marketplace seller shipping from Japan; only 3 left; 30-day returns; condition not stated

Amazon buy box, 2026-09-13

Yellow gold, Ceragold, and why rubber

Omega makes the two-tone Seamaster in two golds. The Sedna version pairs its rose alloy with a blue or black dial; this is the yellow gold one, the closer match to the two-tone Seamasters of the 1990s and to a two-tone Submariner. The gold is real 18k on the bezel ring, the crown, the hands and the markers, and the bezel scale is Ceragold, where Omega grows gold into the ceramic insert so the numerals sit flush and cannot wear off.

On rubber rather than the two-tone bracelet it is a different proposition: lighter at 116 grams, a lot less expensive, and less formal, with the gold reading as an accent rather than the point of the watch. The 20mm lugs take Omega’s bracelet later if you want it.

Illustrative render — yellow gold, ceragold, and why rubber of the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Reading the listing

The listing’s title gives the model and the 42mm size, the model row gives the full reference, 210.22.42.20.03.001, and the seller’s description repeats the title. Everything else here, the steel and yellow gold case, the Ceragold bezel, the gold hands and markers, the blue rubber strap, the calibre 8800, its METAS certification, the reserve, the thickness and the lug figures, is Omega’s published description of that reference, and the photograph matches it.

The seller is MS-TR JAPAN, a marketplace seller shipping from Japan with three left when we read it, and the rows we read do not state whether the watch is new with Omega’s warranty; ask, and ask for the box and card. Nothing here was measured on the watch.

Illustrative render — reading the listing of the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Buying it on Amazon

This is a regular Amazon listing from a marketplace seller with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit and the seller has not published a condition. The second button opens the live search for two-tone Seamaster Diver 300Ms in case this one has sold.

Seamaster Diver 300Ms have resold for under new and close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.

Illustrative render — buying it on amazon of the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Specs

Reference
210.22.42.20.03.001
Case size
42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs
Case material
Stainless steel with 18k yellow gold bezel ring and crown, unidirectional blue ceramic bezel with Ceragold diving scale, conical helium escape valve, screw-in crown, sapphire caseback
Movement
Omega Co-Axial Master Chronometer calibre 8800, automatic, METAS certified
Caliber type
Omega 8800, Master Chronometer
Crystal
Domed sapphire, anti-reflective both sides
Water resistance
300m (30 bar)
Power reserve
About 55 hours
Complications
Date
Origin
Swiss Made

Specifications as published by Omega. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-13.

Verdict

The steel and yellow gold Seamaster Diver 300M on the blue rubber strap with the 8800 Master Chronometer, on Amazon from a Japanese marketplace seller: the gold Seamaster at the lowest two-tone price on this page, with the reference on the listing.

Strengths

  • Real 18k yellow gold on the bezel ring, crown, hands and markers; Ceragold scale
  • Calibre 8800 Master Chronometer, about 55 hours, 300 metres
  • On rubber: 116 grams and the lowest two-tone price here
  • Full reference on the listing; Amazon’s return window

Trade-offs

  • Ships from Japan; condition and warranty not stated, ask
  • Rubber strap; the two-tone bracelet is a separate purchase
  • Yellow gold is a statement; the Sedna is quieter
  • Only three in stock when read

Buy it if

Someone who wants gold on a dive watch without the weight or the price of a gold bracelet.

Skip it if

You want the bracelet, all steel, or a stated condition.

This Seamaster on Amazon$5,000–$10,000 band

FAQ

Omega’s process for setting 18k gold into a ceramic bezel so the numerals and scale sit flush with the surface. On this reference the blue ceramic bezel carries a Ceragold diving scale.

Sources

Researched and last updated 2026-09-13. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.

Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Reference 210.22.42.20.03.001 · $5,000–$10,000

Prices and availability change; the band above is a research figure, so check the current listing.

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