The Cosmograph Daytona 126518LN-0005 combines yellow gold warmth with diamond-set hour markers on a bright black dial. The Cerachrom tachymeter bezel provides scratch resistance, while the Oysterflex bracelet replaces the traditional metal link with a rubber-over-metal-blade construction that suits warmer climates and active wear. This reference bridges the gap between precious-metal luxury and modern sports functionality.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 126518LN |
| Case Size | 40mm |
| Case Material | 18k Yellow Gold Plated |
| Bezel | Black Cerachrom with tachymeter scale |
| Dial | Bright black with diamond markers |
| Crystal | Sapphire |
| Movement | Automatic chronograph (Swiss or Japanese) |
| Water Resistance | 30m |
| Bracelet | Black Oysterflex rubber |
| Clasp | Oysterlock folding safety clasp |
| Functions | Hours, minutes, small seconds, chronograph |
The 126518LN-0005 Up Close
The bright black dial surface sets off eight round-cut diamond hour markers, each catching and refracting ambient light against the dark background. Three subdials handle chronograph duties: small seconds at six, 30-minute counter at three, and 12-hour totaliser at nine. The black Cerachrom bezel carries a moulded tachymeter scale that matches the dial tone.
The 40mm yellow gold case connects to a black Oysterflex bracelet — a metal blade covered in high-performance elastomer that combines security with comfort. The Oysterlock clasp prevents accidental opening. View more Oysterflex-equipped Daytonas in the Daytona collection.
Movement Options: Swiss vs Japanese
Two movement configurations are offered for this reference:
- Swiss automatic chronograph — column-wheel mechanism at 28,800 vph with extended power reserve. Based on the 4130 caliber for smooth chronograph operation.
- Japanese automatic chronograph (Miyota) — 21,600 vph, offering reliable timekeeping and straightforward maintenance at a more accessible entry point.
Both deliver complete chronograph functionality across all three subdial registers.
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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