The Cosmograph Daytona 116518LN pairs 18k yellow gold with the flexibility and comfort of an Oysterflex rubber bracelet, a combination that redefined how gold chronographs are worn daily. The white dial against the black Cerachrom bezel creates a high-contrast face that reads instantly on the wrist, while the Oysterflex system eliminates the weight penalty that keeps many gold bracelets unworn in summer months.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 116518LN |
| Case Size | 40mm |
| Case Material | 18k Yellow Gold |
| Bezel | Black Cerachrom with tachymeter scale |
| Dial | White |
| Crystal | Sapphire |
| Movement | Automatic chronograph |
| Water Resistance | 30m / 100ft |
| Bracelet | Black Oysterflex rubber |
| Clasp | Oysterlock folding safety clasp |
| Functions | Hours, minutes, small seconds, chronograph |
The 116518LN Up Close: Case, Dial and Bracelet
The 40mm yellow gold case contrasts sharply with the black Cerachrom bezel insert. Moulded tachymeter graduations on the bezel remain crisp against the ceramic surface. The white dial features three black subdials — small seconds at six, 30-minute counter at three, and 12-hour totaliser at nine — with applied gold hour markers completing the layout.
The Oysterflex bracelet uses a titanium-nickel alloy blade inside a high-performance black elastomer sheath. It delivers metal-bracelet security with rubber-strap flexibility. View all Oysterflex Daytona references in the Daytona collection.
Movement Options: Swiss vs Japanese
Select from two automatic chronograph calibres, both operating the central chrono hand, 30-minute and 12-hour sub-registers via a column-wheel mechanism:
- Swiss — calibre 4130-type architecture at 28,800 vph with roughly 72-hour power reserve. Known for precision finishing and long service intervals favoured by serious collectors.
- Japanese — Miyota-based chronograph at 21,600 vph with approximately 40-hour reserve. Easy-to-source parts and economical servicing suit everyday rotation.
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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