The Cosmograph Daytona 126515LN with diamond markers elevates the racing chronograph into gem-set territory without sacrificing its sporting character. Set in a 40mm Everose gold case with a black Cerachrom bezel, this reference replaces standard applied indices with diamond hour markers, creating a dial that catches light with each wrist movement. The Oysterflex bracelet keeps the wear experience sporty and comfortable.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 126515LN |
| Case Size | 40mm |
| Case Material | 18k Everose Gold |
| Bezel | Black Cerachrom with tachymeter |
| Dial | Bright black with diamond hour 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 |
| Gem-set | Diamond hour markers |
The 126515LN Diamond Up Close
Diamond hour markers replace the standard applied indices, set directly into the bright black dial surface. The three snailed subdials — small seconds, 30-minute counter, and 12-hour totaliser — maintain the chronograph layout in Everose gold tones. The black Cerachrom bezel with moulded tachymeter scale frames the gem-set face with sporting intent.
The 40mm Everose gold case connects to a black Oysterflex bracelet with Oysterlock clasp, balancing the precious-metal case with lightweight rubber-strap comfort. Explore more chronograph and gem-set references in the Daytona collection.
Movement Options: Swiss vs Japanese
Two movement tiers are available for this gem-set Daytona:
- Swiss Automatic — column-wheel chronograph with higher beat rate, smooth seconds sweep, and power reserve matching the genuine calibre 4131 architecture.
- Japanese Automatic (Miyota) — proven 21,600 vph workhorse with reliable chronograph function and accessible servicing worldwide.
Select your preferred movement from the dropdown above.
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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