Strap for Datejust 31 Stainless Steel / Yellow Gold / Domed / MOP / Oyster

The Rolex Datejust 31 Ref. 278243-0027 has a lug width of 16mm. This dimension is specific to the 31mm case size, distinct from the 20mm of the Datejust 36 and the 13mm of the Lady-Datejust 28. To measure the lug width accurately, use a digital calliper placed between the two lugs perpendicular to the case axis.

Given the mother-of-pearl dial and the yellow gold Rolesor case, the most suitable straps are alligator belly in cognac or ivory tones, vegetable-tanned calf leather in tobacco or natural tan, or shell cordovan in bordeaux or navy. All three complement the precious texture of the case without competing with the iridescence of the dial. For summer use, an ivory or champagne nylon NATO strap is a fitting alternative.

To remove the original bracelet or strap, use a double-tipped springbar tool inserted into the lateral slots of the lugs to compress the spring bars. Care must be taken to avoid scratching the yellow gold lugs. It is advisable to work on a soft cloth and, if in doubt, to consult a watchmaker or the Casati Milano atelier.

Yes. Compatible aftermarket straps must have a lug width of 16mm. Milanostraps.it offers a selection of handcrafted straps made specifically for this size, available in various materials and finishes. For a bespoke result, the Casati Milano atelier produces custom straps with in-person leather selection and production updates via WhatsApp.

The lifespan of a leather strap depends on the material, maintenance, and frequency of use. A high-quality alligator or shell cordovan strap, properly cared for and rotated with other straps, can last between three and seven years while developing a distinguished patina. Vegetable-tanned calf leather develops a characteristic patina over time but is more sensitive to moisture. It is advisable to avoid prolonged contact with water and perspiration and to store the strap in a ventilated case.