The Omega Seamaster Planet Ocean Chronograph is not one fixed watch: the title covers multiple generations and configurations. Omega’s official specifications for the 45.5 mm steel references 215.30.46.51.03.001 (blue) and 215.30.46.51.01.001 (black) list calibre 9900, 600 m water resistance and Master Chronometer certification. But without the reviewed watch’s full reference, it is not possible to say which variant—or generation—this review concerns, and the available information does not establish hands-on testing.
What watch does this review cover?
The exact reference is essential. Omega’s product pages document two 45.5 mm stainless-steel Seamaster Planet Ocean 600M Master Chronometer Chronographs: the blue-dial 215.30.46.51.03.001 and the black-dial 215.30.46.51.01.001. Both are shown with a ceramic bezel and steel bracelet. These are specific documented variants, not stand-ins for every Planet Ocean Chronograph. Omega’s blue reference page and black reference page provide the model-specific details.
The title alone does not identify a reference, dial, strap or bracelet, case material, or generation. The specifications below therefore describe those two cited steel references only. A review of a particular physical watch should name its full reference and configuration, verified against its case, papers, or product record.
Specifications of the cited 45.5 mm steel chronographs
| Specification | 215.30.46.51.03.001 (blue) | 215.30.46.51.01.001 (black) |
|---|---|---|
| Case diameter | 45.5 mm (Omega) | 45.5 mm (Omega) |
| Case and bracelet | Stainless steel case and bracelet (Omega) | Stainless steel case and bracelet (Omega) |
| Bezel | Blue ceramic (Omega) | Ceramic; Omega’s cited page identifies the black-dial counterpart |
| Movement | Calibre 9900 (Omega) | Calibre 9900 (Omega) |
| Water resistance | 60 bar (600 m / 2,000 ft), as stated by Omega | 60 bar (600 m / 2,000 ft), as stated by Omega |
| Other stated features | Helium escape valve; METAS Master Chronometer certification (Omega) | Helium escape valve; METAS Master Chronometer certification (Omega) |
These are manufacturer specifications, not results from independent testing. The rating is Omega’s stated water resistance; it does not establish how a particular watch performs after wear, damage, or service.
Recommended Free Tools
#1 Best Overall
- OMEGA Seamaster Planet Ocean 215.32.46.51.01.001
How the fourth-generation redesign changes the context
Omega announced the Planet Ocean’s fourth generation on 18 November 2025, marking 20 years since the first Planet Ocean release. The launch announcement describes seven new watches. Omega’s announcement establishes the redesign and its place in the collection’s timeline, but it does not make every earlier chronograph reference part of the new generation.
In a 1 May 2026 London event report, Omega said the redesigned collection was available worldwide and described seven versions in blue, black, or signature orange, with rubber straps or steel bracelets. That statement concerns the redesigned collection, not confirmed stock of each individual watch or the ongoing availability of a specific older chronograph reference. Omega’s event report also quotes President and CEO Raynald Aeschlimann calling the Planet Ocean a lifestyle piece as well as an underwater timepiece; that is the brand’s positioning, not an independent assessment.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What can—and cannot—be concluded from the available information
The cited Omega pages establish the listed configurations and specifications. They do not establish independent hands-on impressions, real-world timing or water-resistance tests, or current market pricing. A retailer listing for the blue reference may change in price or stock and is not a dependable evergreen valuation. The separate 2023 Emirates Team New Zealand Planet Ocean Deep Black is another 45.5 mm chronograph powered by calibre 9900, but it is a distinct special edition—not evidence of the configuration covered here. Omega’s 2023 release identifies that edition.
For a meaningful comparison or buying decision, match the full reference and generation first, then compare dial and bezel, case and bracelet or strap materials, dimensions, movement and chronograph functions, stated water resistance, and whether the watch is new or pre-owned. The available specifications do not support ranking one variant as best.
Quick Recap
Best Value
- Brand New Omega Seamaster Planet Ocean Men's Watch
- Self Winding Automatic Master Chronometer Movement
- Omega Caliber 8800
Rank #4
- Blue Dial with Arabic Numeral and Index Hour Markers, Minute Track, Date Window, Luminescent Hands and Hour Markers
- Stainless Steel Case and Bracelet, Case Diameter: 43.5mm
- Anti-Magnetic, Resistant to Magnetic Fields Reaching 15,000 Gauss
- Self-winding Automatic Chronometer Movement, COSC Chronometer Certified and Co-Axial Escapement
- Scratch Resistant Sapphire Crystal with Anti-reflective Treatment, Exhibition Case Back
Rank #3
- Omega Seamaster Planet Ocean Automatic Men's Watch 215.30.44.21.01.001
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
