Strap for Datejust 31 Yellow Gold / Diamond / Olive - Roman / President

The lug width of the Rolex Datejust 31 ref. 278288rbr-0024 is 16mm. This measurement should be taken between the two lugs using a digital calliper, positioned flat against the surface that houses the spring bars.

For a Datejust 31 in yellow gold with a diamond-set bezel, a polished alligator strap is the most coherent choice: its square-scale texture complements the bezel's structure. Alternatively, vegetable-tanned calf leather or polished shell cordovan offer excellent durability and develop a personal patina over time. The correct width is 16mm.

To replace the strap on a Datejust 31, the spring bars housed within the case lugs must be removed using a dedicated spring bar tool — either a forked or pointed tip variant. It is advisable to work on a soft surface to protect both the yellow gold case and the diamond-set bezel. The new 16mm strap is fitted by clicking the spring bars securely into place without forcing.

Yes. The Rolex Datejust 31 ref. 278288rbr-0024 uses standard 16mm spring bar attachments, compatible with aftermarket handcrafted straps. Milano Straps offers a selection of alligator, calf leather, shell cordovan and rubber straps specifically calibrated for the 16mm lug width, with optional buckle or deployant clasp.

The lifespan of a leather strap depends on the material and usage. A high-quality vegetable-tanned alligator strap, properly kept away from prolonged moisture and perspiration, typically lasts 3–5 years with daily wear. Shell cordovan, owing to the density of its fibrous structure, generally outlasts standard calf leather. Milano Straps provides an 18-month warranty against manufacturing defects.