Omega
Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018
The Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 (reference 210.30.42.20.01.018) is a 42 mm stainless steel watch with a black dial. It runs on the automatic caliber 8806 with a 55-hour power reserve and is water resistant to 300 m. It was introduced in 2025 and is still in production.
Specifications
Case
- Reference
- 210.30.42.20.01.018
- Collection
- Seamaster Diver 300M
- Case size
- 42 mm
- Thickness
- 13.8 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 300 m
- Bracelet / strap
- Stainless steel (mesh)
Dial and bezel
- Dial
- Black
- Bezel
- Black anodised aluminium ring (orange accents per watchbase title)
Movement
- Movement
- Automatic
- Caliber
- 8806
- Power reserve
- 55 hours
- Functions
- Date
Production
- Production
- 2025 – today (current)
Dial versions
This reference was made with these dials and finishes.
210.30.42.20.01.018 Black
Black aluminium dial
How it compares within the Seamaster Diver 300M family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 210.30.42.20.01.018 (This watch) | 42 mm | Stainless steel | Black | 8806 | 2025– |
| 210.30.42.20.06.002 | 42 mm | Stainless steel / titanium | Grey | 8806 | 2024– |
| 210.32.42.20.01.005 | 42 mm | Stainless steel | Black | 8806 | 2025– |
| 210.32.42.20.01.006 | 42 mm | Stainless steel | Black | 8806 | 2025– |
| 210.32.42.20.04.002 | 42 mm | Stainless steel | White | 8806 | 2024– |
| 210.32.44.51.01.002 | 44 mm | Stainless steel | Black | 9900 | 2026– |
| 210.52.42.20.04.001 | 42 mm | 18K Sedna gold | White | 8801 | 2025– |
| 210.62.42.20.01.003 | 42 mm | 18K Moonshine gold / ceramic | Black | 8801 | 2025– |
| 522.92.44.20.04.001 | 43.5 mm | Titanium / ceramic | White | 8806 | 2026– |
About the Seamaster Diver 300M family
The Seamaster Diver 300M was introduced in 1993. The blue-dial ref. 2531.80 and its quartz and automatic siblings, with skeleton hands, a wave-pattern dial and a helium escape valve at 10 o'clock, became widely known after the James Bond films from 1995.
In 2018 Omega redesigned the watch with a ceramic bezel and dial, laser-engraved waves and Master Chronometer caliber 8800, under refs. 210.30.42.20. The line now includes chronographs, titanium and gold versions and several special editions. Dealers identify the generation by reference and dial, and on 1990s pieces check whether the movement is quartz or automatic and whether the bezel insert is original.
Quick answers
- What size is the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018?
- The Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018 has a 42 mm case, 13.8 mm thick.
- What movement does the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018 use?
- It uses the automatic caliber 8806, with a 55-hour power reserve.
- How water resistant is the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018?
- It is water resistant to 300 metres.
- Is the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018 still in production?
- Yes, it is a current reference.
- When did the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018 come out?
- It was introduced in 2025.
- What is the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 210.30.42.20.01.018 made of?
- The case is stainless steel. Bracelet or strap: Stainless steel (mesh).
Catalog facts checked October 2026.