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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchOmega’s Liquidmetal story began with a limited-edition Seamaster Planet Ocean introduced in 2009. The name refers to an amorphous metallic alloy, not a finish used across every Planet Ocean: selected later references place Liquidmetal diving-scale markings in ceramic bezels. The exact reference determines the size, materials and specifications.
What is Liquidmetal?
Liquidmetal is a bulk metallic glass alloy. Swatch Group identifies its ingredients as zirconium, titanium, copper, nickel and beryllium. Unlike a conventional crystalline metal, its atoms have a disordered structure. Swatch Group says this structure allows the alloy to bond seamlessly with ceramic, and that its comparatively low fusion temperature makes it possible to work the material without damaging the ceramic during heating. Swatch Group’s technical explanation attributes two further comparisons to the company: Liquidmetal’s fusion temperature is half that of conventional titanium alloys, and the cooled alloy is three times as hard as stainless steel. The page does not set out an independent testing protocol, so those figures should not be taken as proof of a particular watch’s real-world scratch or wear resistance.
How Omega first used Liquidmetal
Omega’s first combination of ceramic and Liquidmetal came in 2009, according to a June 2011 Hong Kong Watch & Clock Fair release. The limited-edition Seamaster had a black ceramic dial and used the alloy. Swatch Group’s 2010 account names the watch as the Seamaster Planet Ocean Liquidmetal Limited Edition and specifies a stainless-steel case and bracelet, with Omega Co-Axial calibre 2500.
That original limited edition is a historical model, distinct from later Planet Ocean references that use Liquidmetal on their bezel scales. The 2010 Swatch Group page describes the limited edition; it does not establish whether it is currently available new.
Later Planet Ocean watches with Liquidmetal bezel scales
Omega’s product pages show that the treatment continued in selected Planet Ocean models. In these examples, a ceramic bezel carries a Liquidmetal diving scale. A Liquidmetal scale does not, by itself, identify a particular generation or specification; use the complete reference to distinguish the watches.
| Reference | Case diameter | Bezel and scale | Specifications established on Omega’s page |
|---|---|---|---|
| 215.30.40.20.04.001 | 39.5 mm | White ceramic unidirectional bezel with Liquidmetal diving scale | 600 m water resistance; helium escape valve |
| 215.33.44.21.01.001 | 43.5 mm | Black ceramic bezel with Liquidmetal scale | Not stated here; check the exact regional product page |
These are reference-specific details from Omega’s Planet Ocean product catalogue. In particular, the 600-metre rating and helium escape valve above belong to the cited 39.5 mm model; they should not be assumed for every Liquidmetal Planet Ocean.
Rank #2
- 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
How to compare an Omega Planet Ocean with a Liquidmetal bezel
Omega’s catalogue includes a broader Planet Ocean family, not a single bezel or specification package. Its Japan catalogue search results, accessed 7 October 2026, listed 17 family products spanning standard Planet Ocean, Worldtimer and Ultra Deep variants. The same catalogue included models rated to 600 metres and Ultra Deep models rated to 6,000 metres. Counts and availability can change and differ by market; these family-level figures are not specifications for any one reference.
When comparing an Omega Planet Ocean with Liquidmetal, check the exact reference and regional product page rather than relying on the collection name alone:
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Quick Recap
Rank #4
- Omega Seamaster Planet Ocean Automatic Men's Watch 215.30.44.21.01.002
Rank #3
- Omega Seamaster Planet Ocean Automatic Men's Watch 215.33.44.22.01.001
- Edition and reference: establish whether it is the original limited edition or a later reference, and verify the full reference number.
- Size and case construction: compare the listed diameter and case materials for the particular watch.
- Bezel: confirm the ceramic color and whether the scale is Liquidmetal; do not assume every Planet Ocean bezel uses it.
- Movement and functions: verify the calibre and any additional functions on the model’s own page.
- Water resistance and valve: treat depth rating and helium escape valve as model-specific specifications.
- Condition and provenance: for a pre-owned watch, compare the reference with its documentation and assess condition and completeness. The available sources do not establish a particular resale price or authentication program.
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.
