The Cosmograph Daytona 116509-0055 elevates the racing chronograph with diamond-set hour markers against a bright black dial. The white gold case provides a cooler, more understated precious-metal finish than yellow or Everose alternatives. Diamond indices add a layer of visual interest that sets this reference apart from standard baton-marker Daytonas while retaining full chronograph functionality.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 116509 |
| Case Size | 40mm |
| Case Material | White Gold Plated |
| Bezel | Tachymeter scale |
| Dial | Bright black with diamond markers |
| Crystal | Sapphire |
| Movement | Automatic chronograph (Swiss or Japanese) |
| Water Resistance | 30m |
| Bracelet | Oyster, white gold plated |
| Clasp | Folding Oysterclasp |
| Functions | Hours, minutes, small seconds, chronograph |
The 116509-0055 Up Close
The bright black dial provides a glossy, reflective surface that contrasts with the set diamond hour markers. Eight round-cut diamonds replace standard baton indices at each even hour, while the three subdials — small seconds at six, 30-minute counter at three, and 12-hour totaliser at nine — sit recessed within the dial surface. The tachymeter bezel completes the sports-chronograph aesthetic.
The 40mm white gold plated case has a subtle, cool-toned finish that reads like polished steel from a distance. The matching Oyster bracelet terminates in a folding clasp. Find more gem-set Daytona references in the Daytona collection.
Movement Options: Swiss vs Japanese
Choose between two movement tiers at checkout:
- Swiss automatic chronograph — 28,800 vph column-wheel mechanism based on the 4130 architecture. Delivers a smooth sweep and longer power reserve for demanding daily use.
- Japanese automatic chronograph (Miyota) — 21,600 vph with proven reliability and easy servicing. A practical option for regular rotation.
Full chronograph timing with three registers is standard across both variants.
Shipping, Warranty and Returns
Every order ships with discreet packaging and full tracking. Delivery times vary by destination — see our shipping policy for detailed timeframes and methods. This watch is covered by our standard movement warranty. If your purchase does not meet expectations, review our return and exchange policy for available options.






















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