Omega · Planet Ocean 600M Chronograph · steel and Sedna gold · blue · on Amazon
The two-tone Planet Ocean chronograph. 600 metres in blue and gold.
This is Omega’s deep diver as a two-tone chronograph: the Planet Ocean 600M Chronograph in steel and 18k Sedna gold, reference 215.20.46.51.03.001, a 45.5mm case with a blue ceramic bezel carrying a Sedna gold diving scale, a blue dial with two counters, the date at three, Sedna gold crown and pushers, a helium valve at ten, on the steel and Sedna gold bracelet. Inside is Omega’s co-axial calibre 9900, a Master Chronometer automatic chronograph with a 60-hour reserve, tested by METAS; 600 metres. From a marketplace seller on Amazon that lists the same reference twice.
Case
45.5mm, 18.87mm thick, 22mm lugs, 52.30mm lug to lug, steel with 18k Sedna gold bezel, crown and pushers, blue ceramic bezel ring with Sedna gold scale, helium valve, sapphire caseback, 600m, about 267 g
Omega 215.20.46.51.03.001
Movement
Omega co-axial calibre 9900, automatic column-wheel chronograph, Master Chronometer (METAS), 60 h
Omega
Dial
Blue, Sedna gold applied markers and hands, two counters, date at 3
Photograph; Omega: dial colour blue
Bracelet
Steel and 18k Sedna gold, foldover clasp with diver extension
Photograph; Omega
Reference
215.20.46.51.03.001; MS-TR JAPAN lists it twice (also ASIN B072B8LSQD)
Listing title and model row
Seller
MS-TR JAPAN, marketplace seller; in stock; 30-day returns; condition not stated
Amazon buy box, 2026-09-14
The Planet Ocean, in two metals
The Planet Ocean is Omega’s 600-metre diver, the bigger and deeper sibling of the Seamaster Diver 300M, and the chronograph version is a 45.5mm watch nearly 19mm thick with the calibre 9900 inside. Steel and Sedna gold with a blue ceramic bezel is the version that is more jewellery than tool: the gold scale on the blue ceramic, the gold crown and pushers, the gold centre links. At 267 grams on the bracelet it announces itself.
The seller has this reference listed under two ASINs at the same price; the copy links the one with the clearer title.
Reading the listing
The listing carries the reference 215.20.46.51.03.001 in the title and model row and calls it a Planet Ocean 600M in rose gold, which is the seller’s word for Omega’s Sedna gold on a steel case. The photograph shows the blue ceramic bezel with the gold scale, the blue dial with two counters and the two-tone bracelet. The size, thickness, lug width, lug to lug, weight, calibre, METAS certification, reserve and 600 metres are Omega’s published figures for the reference.
The seller is MS-TR JAPAN, a marketplace seller, 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. Nothing here was measured on the watch.
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 Planet Oceans in case this one has sold.
Planet Oceans 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
- 215.20.46.51.03.001
- Case size
- 45.5mm, 18.87mm thick, 22mm lugs, 52.30mm lug to lug, about 267 g
- Case material
- Stainless steel with 18k Sedna gold bezel, crown and pushers; unidirectional bezel with blue ceramic ring and Sedna gold scale; helium escape valve; sapphire caseback
- Movement
- Omega co-axial calibre 9900, automatic column-wheel chronograph, Master Chronometer (METAS), 15,000 gauss
- Caliber type
- Omega 9900 co-axial Master Chronometer
- Crystal
- Domed sapphire, anti-reflective both sides
- Water resistance
- 600m (60 bar)
- Power reserve
- 60 hours
- Complications
- Chronograph (60 minutes and 12 hours on one counter at 3, small seconds at 9), date at 3
- Origin
- Swiss Made
Specifications as published by Omega. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-14.
Verdict
Omega’s Planet Ocean 600M Chronograph in steel and Sedna gold with a blue ceramic bezel and the Master Chronometer 9900, on Amazon from a marketplace seller.
Strengths
- 600 metres in a two-tone chronograph
- Blue ceramic bezel with a Sedna gold scale
- Master Chronometer 9900, 60 hours, 15,000 gauss
- Full reference on the listing; Amazon’s return window
Trade-offs
- Condition and warranty card not stated by the seller; ask
- 45.5mm, 18.87mm and 267 g; the biggest watch on this page
- The seller’s title says rose gold; it is Sedna gold on steel, not a solid gold case
- MS-TR JAPAN ships from Japan; ask about delivery time
Buy it if
Someone who wants the biggest two-tone Omega diver chronograph and has the wrist for it.
Skip it if
You want a smaller case, all steel, or a stated condition.
FAQ
Omega’s co-axial automatic chronograph with Master Chronometer certification: column wheel, silicon balance spring, twin barrels for 60 hours, tested by METAS to 15,000 gauss, with the 60-minute and 12-hour counters on one sub-dial at 3.
Compare
OmegaSeamaster Planet Ocean 600M Chronograph 45.5mm 215.20.46.51.03.001 (steel and Sedna gold, blue ceramic bezel, blue dial, two-tone bracelet) vs Seamaster Diver 300M Chronograph 44mm 210.20.44.51.01.001 (steel and Sedna gold, black ceramic bezel, black dial, two-tone bracelet)
OmegaSeamaster Planet Ocean 600M Chronograph 45.5mm 215.20.46.51.03.001 (steel and Sedna gold, blue ceramic bezel, blue dial, two-tone bracelet) vs Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic)
OmegaSeamaster Planet Ocean 600M Chronograph 45.5mm 215.20.46.51.03.001 (steel and Sedna gold, blue ceramic bezel, blue dial, two-tone bracelet) vs Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)Sources
- Omega Planet Ocean 600M Chronograph 215.20.46.51.03.001, official page
- Amazon marketplace listing (MS-TR JAPAN), read 2026-09-14
Researched and last updated 2026-09-14. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.
Omega Seamaster Planet Ocean 600M Chronograph 45.5mm 215.20.46.51.03.001 (steel and Sedna gold, blue ceramic bezel, blue dial, two-tone bracelet)
Reference 215.20.46.51.03.001 · $10,000–$25,000
Prices and availability change; the band above is a research figure, so check the current listing.
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