Strap for Datejust 31 Stainless Steel Domed Diamond / Jubilee / White - Roman

The Rolex Datejust 31 ref. 278344RBR-0012 has a lug width of 16mm. This measurement should be verified using a digital calliper placed between the lugs at the narrowest point closest to the case. Adhering to this exact dimension is essential for correct strap alignment and secure spring bar retention.

For the Datejust 31 in white gold with a diamond-set bezel, an alligator strap in vegetable-tanned leather is the most stylistically coherent choice: the scale texture complements the brilliance of the diamonds and white gold. Alternatively, polished box calf leather offers refined everyday elegance with a developing patina, while shell cordovan suits those seeking an exclusive material with its own aesthetic evolution.

Replacing the strap on the Datejust 31 requires a spring bar tool or a dedicated screwdriver to remove the spring bars from the lugs. The Oyster case lugs have a specific internal curvature: any aftermarket strap must be shaped accordingly to follow this profile. It is advisable to entrust this operation to a watchmaker or specialist atelier to avoid scratching the white gold case.

Yes. Aftermarket straps with a 16mm lug width and curved ends are compatible with the Datejust 31. Milano Straps offers a selection of handcrafted straps specifically made for this size, available in alligator, calf leather, shell cordovan and rubber. Each strap is produced with padding and shaping calibrated for Rolex Oyster lugs.

The lifespan of a leather strap depends on the material, frequency of use and exposure to moisture and perspiration. A high-quality vegetable-tanned alligator strap, worn on rotation, can last between 2 and 5 years while maintaining structural integrity. Box calf leather has a comparable lifespan. Prolonged contact with water should be avoided, and the strap should be allowed to dry before storage. Casati Milano offers an 18-month warranty against manufacturing defects.