Strap for Cosmograph Daytona White Gold / Blue / Oyster

The Rolex Daytona 126509-0005 features a lug width of 20mm. This measurement is the distance between the two lugs protruding from the case. It is essential to verify this specification correctly before purchasing a strap, as a 19mm or 21mm strap would not fit properly into the lugs.

Alligator remains the noblest material for this model: the natural texture of the leather creates a visual dialogue with the white gold's reflections. Shell cordovan is a sophisticated alternative for those seeking durability and a developing patina. For a more sporting option, a medium-grain calf leather offers a balance between elegance and practicality.

Obtain a spring bar removal tool, available from any professional watchmaker. Place the watch on a soft surface. Insert the tool's tip into the small hole beneath the lug, apply gentle pressure to release the spring mechanism, and extract the bar. Repeat on the other side. To install the new strap, reverse the procedure by aligning the strap's holes with the lugs. We recommend entrusting this operation to a professional to avoid damage to the case.

Yes, provided the strap is specifically compatible with a 20mm lug width and crafted from quality materials. Artisanal straps in alligator, shell cordovan, or excellent calf leather are completely safe and often offer construction quality comparable to official Rolex straps, with the added benefit of greater customisation and a unique patina developed over time.

The lifespan of a leather strap depends on the material and intensity of use. A quality alligator strap typically lasts 4–6 years with daily wear; shell cordovan, owing to its natural hardness, can last 8–10 years or beyond. Leather fears excessive moisture and prolonged direct sunlight. A well-maintained strap, protected during winter months and cleaned regularly, develops a noble patina rather than deteriorating rapidly.