Strap for Datejust 31 Yellow Gold - Fluted / Olive - Floral / President

The Rolex Datejust 31 reference 278278-0046 has a lug width of 16mm. This measurement, taken with a digital calliper placed between the two lugs flush against the case, determines compatibility with any aftermarket strap. It should not be confused with the strap's centre width, which may differ.

For an 18-carat yellow gold case, the most coherent materials are vegetable-tanned alligator — preferably in havana, cognac or burgundy tones — and smooth calfskin for everyday wear. Shell cordovan offers a dense, naturally lustrous finish that complements the warmth of yellow gold particularly well. For sporting or summer use, vulcanised rubber provides full water resistance without compromising the luxury aesthetic.

To replace the strap on a Datejust 31, you will need a fine-tipped spring bar tool to remove the spring bars from the 16mm lugs. Work carefully to avoid scratching the yellow gold case, remove the original bracelet or strap, then insert the new strap ensuring the spring bars click firmly into the lug holes. It is advisable to work on a soft surface; for precious metal cases, entrusting the operation to a watchmaker or to the Casati Milano atelier is recommended.

Yes. The Rolex Datejust 31 278278-0046 features a standard 16mm lug width, which ensures compatibility with high-quality aftermarket straps. Milano Straps and the Casati Milano atelier produce handcrafted straps with 16mm spring bars, available with straight or curved ends upon request, in alligator, calfskin, shell cordovan and other fine materials. You may browse the ready-to-ship selection online or commission a fully bespoke strap.

The lifespan of a leather strap depends on the material, maintenance and frequency of wear. A quality alligator strap, properly cared for and rotated with other straps, can last between three and five years while retaining its structural integrity and refined appearance. Vegetable-tanned calfskin develops a distinctive patina over time. Casati Milano straps carry an 18-month warranty against manufacturing defects. To extend longevity, avoid prolonged exposure to water, perspiration and direct UV light.