Strap for Datejust 31 Rose Gold / Diamond / Chocolate - Diamond / President

The Rolex Datejust 31 reference 278285rbr-0006 features a lug width of 16mm. This measurement is specific to the 31mm case and differs from other Datejust variants: 13mm for the 28mm case and 20mm for the 36mm version. Always verify this measurement with a digital calliper before purchasing a replacement strap.

For the Datejust 31 in Everose gold, a smooth alligator strap is the most coherent aesthetic choice, as its regular texture complements the diamond-set bezel. Shell cordovan offers a compact surface with a noble patina that develops over time. For everyday wear, vegetable-tanned calf leather provides comfort and longevity. A butterfly deployant clasp is recommended to distribute pressure evenly and protect the 16mm lugs.

To replace the strap on a Datejust 31, you will need a spring bar tool to remove the spring bars securing the strap to the 16mm lugs. Take care not to scratch the Everose gold case: protect the lugs with soft adhesive tape and work on a padded surface. If in doubt, consult a professional watchmaker or visit the Casati Milano atelier for an assisted fitting.

Yes, high-quality aftermarket straps are available in the 16mm lug width required by the Datejust 31. Milano Straps offers a curated selection of handcrafted straps in alligator, shell cordovan, calf leather and rubber, all sized to fit this specific model. Each strap is compatible with standard spring bars and aftermarket deployant clasps.

The lifespan of a leather strap depends on the material, tanning quality and frequency of use. A high-quality alligator strap, with proper care, typically lasts between two and five years with regular wear. Shell cordovan is more resistant due to its dense fibre structure. Casati Milano straps carry an 18-month warranty against manufacturing defects. To extend strap life, avoid prolonged exposure to water and perspiration.