Omega Seamaster Diver 300M Co-Axial Master Chronometer 44mm automatic watch, black dial
O21020445101001
£15,600
Price at Goldsmiths, checked 28 October 2026. Prices can change: Goldsmiths' page has the final word.
This version: 44mm, black dial. Goldsmiths has 8 versions of the Seamaster Diver 300M Co-Axial Master Chronometer in stock: compare them.
44mmAutomatic300 m water resistantStainless steel & 18ct yellow goldMen's
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Specifications
| Brand | Omega |
|---|---|
| Model | Seamaster Diver 300M Co-Axial Master Chronometer |
| Reference | O21020445101001 |
| Gender | Men's |
| Style | — |
| Case size | 44mm |
|---|---|
| Lug to lug | — |
| Case material | Stainless steel & 18ct yellow gold |
| Bezel | — |
| Dial colour | Black |
| Strap | Stainless steel & 18ct yellow gold |
Will 44mm suit your wrist? Check your size
| Movement | Automatic |
|---|---|
| Calibre | 9900 |
| Power reserve | — |
| Water resistance | 300 m |
| Crystal | — |
| Thickness | — |
| Date | — |
| Guarantee | Omega 5 Year Guarantee |
A dash means neither Goldsmiths nor Omega states it on the pages we read, so it's left blank rather than guessed.
Description
Delivery & returns
Other versions of the Omega Seamaster Diver 300M Co-Axial Master Chronometer
The same watch in 8 versions at Goldsmiths: here's what changes. Prices are Goldsmiths' own, checked daily.
| Reference | Size | Dial | Case | Strap or bracelet | Price |
|---|---|---|---|---|---|
| O21020445101001 This one | 44mm | Black | Stainless steel & 18ct yellow gold | Stainless steel & 18ct yellow gold | £15,600 |
| O21032422010001 | 42mm | Green | Stainless steel | Rubber | £5,300 |
| O21030422010001 | 42mm | Green | Stainless steel | Stainless steel | £5,600 |
| O21032422003002 | 42mm | Blue | Stainless steel | Rubber | £5,600 |
| O21030422003003 | 42mm | Blue | Stainless steel | Stainless steel | £5,900 |
| O21092442001003 | 43.5mm | Black | Ceramic | Rubber | £8,900 |
| O21020422003001 | 42mm | Blue | Stainless steel & 18ct yellow gold | Stainless steel | £12,300 |
| O21062442001001 | 43.5mm | Black | Ceramic & 18ct rose gold | Rubber | £13,000 |