Omega · Seamaster Diver 300M · 42mm · steel · blue · on Amazon
The blue Seamaster. The one people actually search for.
When someone types Omega Seamaster into Amazon, this is the watch they mean: the 2018 Diver 300M in steel with the blue ceramic wave dial, the blue ceramic bezel with its white enamel scale, skeleton hands, the date at six, the helium valve at ten, on the steel bracelet with the diver extension in the clasp. 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. It was listed under Omega’s own price when we read it, from a marketplace dealer, and it is the most-rated Seamaster on Amazon.
Case
42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs, steel, unidirectional blue ceramic bezel, conical helium escape valve, sapphire caseback, 300m
Listing: 42mm, 300m, rotating bezel; Omega 210.30.42.20.03.001 (the dealer says 14mm thick; Omega says 13.56)
Movement
Omega Co-Axial Master Chronometer calibre 8800, METAS certified, about 55 h
Omega 210.30.42.20.03.001
Dial
Blue polished ceramic with laser-engraved waves, rhodium-plated skeleton hands and raised indexes, white Super-LumiNova, date at 6
Listing: blue dial; photograph; Omega
Bracelet
Steel, foldover clasp with comfort setting and diver extension, push-button release
Dealer description; Omega
Reference
210.30.42.20.03.001
Listing title and model row
Seller
World Of Watches, marketplace dealer; in stock; 30-day returns; 21 ratings when read; condition not stated
Amazon buy box, 2026-09-13
The 2018 Seamaster, in its main colour
Omega rebuilt the Seamaster Diver 300M for its 25th anniversary in 2018 and gave it back the wave dial of the 1993 original, laser-engraved into polished ceramic this time so it never fades. The bezel insert is ceramic too, with the diving scale in white enamel, and the movement is the 8800, a Master Chronometer tested by METAS for accuracy and for resistance to magnetic fields of 15,000 gauss. The helium valve at ten kept its place and got a conical shape; the date moved to six.
Blue on steel is the version that carries the name. The black one is the same watch with a darker dial; the two-tone and gold ones are the same watch with more money on it. If you want the Seamaster that James Bond wore in the films of the last decade and that Omega puts in its own advertising, it is this reference.
Reading the listing
The listing carries the full reference, 210.30.42.20.03.001, in the title and the model row, and the dealer’s description lists the blue dial, steel case and bracelet, automatic movement, 300 metres, unidirectional bezel, a deployment clasp with push-button release and a 42mm case. The one figure that disagrees with Omega is the thickness: the dealer says 14mm, Omega publishes 13.56mm, and the copy here uses Omega’s. The calibre, its METAS certification, the reserve, the ceramic dial and bezel and the sapphire caseback are Omega’s published figures for the reference.
The seller is World Of Watches, a marketplace dealer, and the rows we read do not state whether the watch is new with Omega’s five-year warranty; ask, and ask for the box and card. It has 21 ratings on Amazon, more than any other Seamaster there when we read it, which says people are buying this one. Every figure here comes from the listing and from Omega’s published description, not from handling the watch.
Buying it on Amazon
This is a regular Amazon listing from a marketplace dealer with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit and the dealer has not published a condition. It was listed under Omega’s own list price when we read it. The second button opens the live search for blue 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.
Specs
- Reference
- 210.30.42.20.03.001
- Case size
- 42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs
- Case material
- Stainless steel, unidirectional blue ceramic bezel with white enamel 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 blue steel Seamaster Diver 300M with the 8800 Master Chronometer, on Amazon from a marketplace dealer under Omega’s list price: the exact reference people search for, with the full reference on the listing and Amazon’s return window.
Strengths
- Calibre 8800 Master Chronometer, about 55 hours, 300 metres
- Blue ceramic wave dial and ceramic bezel; neither fades
- Listed under Omega’s own price when read; the most-rated Seamaster on Amazon
- Full reference on the listing; Amazon’s return window
Trade-offs
- Condition and warranty card not stated by the dealer; ask
- Dealer’s thickness figure is wrong; expect 13.56mm
- 42mm and 194 grams on the bracelet; a substantial watch
- Every third wrist at the marina has one
Buy it if
Someone who wants the Seamaster, in the colour that is the Seamaster, with a movement certified beyond chronometer.
Skip it if
You want the black dial, the rubber strap, or a stated condition and warranty date.
FAQ
It is the current Seamaster Diver 300M, the model line Bond has worn since 1995. The blue ceramic 42mm on steel is the standard reference; the film-specific 007 editions are different references.
Compare
OmegaSeamaster Diver 300M Co-Axial Master Chronometer 42mm 210.30.42.20.03.001 (steel, blue ceramic dial, steel bracelet) vs Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.30.42.20.01.001 (steel, black ceramic dial, steel bracelet)
OmegaSeamaster Diver 300M Co-Axial Master Chronometer 42mm 210.30.42.20.03.001 (steel, blue ceramic dial, steel bracelet) vs Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet)
OmegaSeamaster Diver 300M Co-Axial Master Chronometer 42mm 210.30.42.20.03.001 (steel, blue ceramic dial, steel bracelet) vs Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.20.42.20.03.002 (steel and Sedna gold, blue dial, bracelet)Sources
- Omega Seamaster Diver 300M 210.30.42.20.03.001, official page
- Amazon marketplace listing (World Of Watches), read 2026-09-13
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 210.30.42.20.03.001 (steel, blue ceramic dial, steel bracelet)
Reference 210.30.42.20.03.001 · $5,000–$10,000
Prices and availability change; the band above is a research figure, so check the current listing.
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