Omega Speedmaster Calibre 321 Chronograph 38.5mm manual winding watch, black dial
O31150393001001
£91,300
Price at Goldsmiths, checked 28 October 2026. Prices can change: Goldsmiths' page has the final word.
38.5mmManual Winding50 m water resistant18ct white goldMen's
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Specifications
| Brand | Omega |
|---|---|
| Model | Speedmaster Calibre 321 Chronograph |
| Reference | O31150393001001 |
| Gender | Men's |
| Style | — |
| Case size | 38.5mm |
|---|---|
| Lug to lug | — |
| Case material | 18ct white gold |
| Bezel | — |
| Dial colour | Black |
| Strap | 18ct white gold |
Will 38.5mm suit your wrist? Check your size
| Movement | Manual Winding |
|---|---|
| Calibre | 321 |
| Power reserve | — |
| Water resistance | 50 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.