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

The Rolex Datejust 31 ref. 278288rbr-0009 features a lug width of 16mm. This measurement is specific to the 31mm case and differs from the Datejust 36 (20mm) and the Lady-Datejust 28mm (13mm). Before purchasing an aftermarket strap, it is always advisable to verify the measurement using a digital calliper placed at the springbar seat.

For the Datejust 31 in yellow gold with a ruby pavé dial, a semi-matte alligator strap in bordeaux or geranium red is the most chromatically coherent choice. Alternatively, a vegetable-tanned calfskin develops a natural patina that integrates beautifully with the mixed finishes of the case, whilst shell cordovan offers a compact, grain-free surface with warm reflections that complement the yellow gold. The ideal fastening is a coordinated yellow gold buckle or a butterfly deployant clasp.

To remove the original Oyster or Jubilee bracelet, a dedicated springbar tool with a 0.6–0.8mm tip is required. Insert it into the lug hole to compress the spring bar and release the bracelet. Care must be taken to avoid scratching the polished yellow gold surfaces. It is recommended to rest the caseback on a watchmaker's cushion and work in a well-lit environment. If in doubt, entrust the operation to a professional watchmaker.

Yes. The Datejust 31 accepts any 16mm strap fitted with standard springbars. Handcrafted aftermarket straps — such as those produced by Casati Milano — are made to the exact lug dimensions and are available in a range of materials including alligator, calfskin, shell cordovan, and rubber. It is important to verify that the buckle or deployant clasp is compatible with the yellow gold case finishing.

The lifespan of a leather strap depends on the material, frequency of use, and care. A quality alligator strap, kept away from prolonged exposure to water and perspiration, can last between 2 and 5 years with daily wear. Shell cordovan and vegetable-tanned calfskin develop a patina over time but tend to last longer owing to their compact fibre structure. Allowing the strap to air out and rotating between straps will significantly extend the leather's service life.