Omega
Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001
The Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 (reference 215.30.44.21.01.001) is a 43.5 mm stainless steel watch with a black dial. It runs on the automatic caliber 8900 with a 60-hour power reserve and is water resistant to 600 m. It was introduced in 2016 and is still in production.
Specifications
Case
- Reference
- 215.30.44.21.01.001
- Collection
- Seamaster Planet Ocean
- Case size
- 43.5 mm
- Thickness
- 16.09 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 600 m
- Bracelet / strap
- Stainless steel bracelet
Dial and bezel
- Dial
- Black
- Bezel
- Rotating dive bezel (ceramic)
Movement
- Movement
- Automatic
- Caliber
- 8900
- Power reserve
- 60 hours
- Frequency
- 25,200 vph
- Jewels
- 39
- Functions
- Date, Dive bezel
Production
- Production
- 2016 – today (current)
How it compares within the Seamaster Planet Ocean family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 215.30.44.21.01.001 (This watch) | 43.5 mm | Stainless steel | Black | 8900 | 2016– |
| 215.30.40.20.01.001 | 39.5 mm | Stainless steel | Black | 8800 | 2016– |
| 215.30.46.21.03.001 | 45.5 mm | O-MEGASTEEL | Blue gradient | 8912 | 2022– |
| 215.30.46.21.04.001 | 45.5 mm | O-Megasteel | White | — | — |
| 215.30.46.21.06.001 | 45.5 mm | O-Megasteel | Blue | — | — |
| 215.32.46.21.03.001 | 45.5 mm | O-Megasteel | Grey | — | — |
| 215.32.46.21.04.001 | 45.5 mm | O-Megasteel | White | — | — |
| 215.32.46.21.06.001 | 45.5 mm | O-Megasteel | Blue | — | — |
| 215.92.46.21.01.001 | 45.5 mm | Titanium | Black | — | — |
About the Seamaster Planet Ocean family
The Planet Ocean was introduced in 2005 as a deeper-rated Seamaster, water resistant to 600 metres, with a heavier case, a helium escape valve and bright orange accents inspired by Omega's 1960s divers.
In 2016 the line moved to Master Chronometer calibers such as the 8900, under refs. such as 215.30.44.21, and it includes GMT models, chronographs and the Deep Black models in ceramic. Case sizes vary from about 39.5 to 45.5 mm. Dealers describe a Planet Ocean by size, bezel colour and bracelet or strap, and separate the pre-2016 co-axial generation from the Master Chronometer models.
Quick answers
- What size is the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001?
- The Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001 has a 43.5 mm case, 16.09 mm thick.
- What movement does the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001 use?
- It uses the automatic caliber 8900, with a 60-hour power reserve.
- How water resistant is the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001?
- It is water resistant to 600 metres.
- Is the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001 still in production?
- Yes, it is a current reference.
- When did the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001 come out?
- It was introduced in 2016.
- What is the Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer 43.5 215.30.44.21.01.001 made of?
- The case is stainless steel. Bracelet or strap: Stainless steel bracelet.
Catalog facts checked September 2026.