Strap for Rolex Daytona 116520

The Rolex Daytona ref. 116520 features a lug width of precisely 20 millimetres. This measurement is determined by the distance between the two inner edges of the case lugs. To verify compatibility with an aftermarket strap, measure the internal space between the lugs using a digital calliper; the result must fall between 19.8 and 20.2 millimetres. The 116520's lugs have well-defined, non-rounded shoulders, which requires straps manufactured with millimetre-level precision so that the spring bars insert without lateral play.

For the Daytona 116520, we recommend premium materials such as alligator leather, which offers sophisticated elegance and develops a fascinating patina over time. Shell cordovan is ideal for formal contexts, whilst vegetable-tanned calf represents an excellent compromise between elegance and daily practicality. For a sporting interpretation, a robust nylon NATO or an FKM rubber strap maintains the racing character. The choice depends on intended use and personal aesthetic preference, but it is essential that the strap be manufactured with precision engineering to ensure an impeccable fit on the specific lugs of this reference.

To change the 116520's strap, you must remove the spring bar pins from the lugs using a dedicated tool, applied gently but firmly to compress the internal spring and slide the pin out laterally. Proceed with caution to avoid scratching the case. Once the pins are removed, the old strap detaches. Insert the new spring bars into the prepared holes on the new strap, then re-insert them into the case lugs, ensuring they snap into position with a distinct metallic click. Many owners entrust this operation to a professional watchmaker to guarantee precision and case protection.

Yes, the Daytona 116520 is entirely compatible with 20mm aftermarket straps. However, because the lugs feature well-defined, non-rounded shoulders, it is crucial to order straps specifically manufactured for this geometry. Generic or approximate straps will cause lateral play and may scratch the case. Specialised suppliers such as Casati Milano, which craft straps artisanally, guarantee a precise fit through direct lug measurement and the application of manufacturing patterns optimised for the model.

The lifespan of a leather strap depends on material and usage. Alligator and shell cordovan, if properly maintained, offer 5–8 years of life with daily wear, developing an appreciable patina. Vegetable-tanned calf has a similar lifespan, although natural tanning makes it slightly more prone to natural oxidation. The leather's fibres progressively wear at flex points and friction zones against the wrist. An artisanally crafted strap made from premium leather inevitably ages better than an industrially produced one. Manufacturer warranty against production defects typically covers 18–24 months; thereafter, wear is considered natural. Storing the strap away from excessive humidity and direct sunlight significantly extends useful life.