Strap for Datejust 31 Yellow Gold / Diamond / Silver - Roman / Oyster

The Rolex Datejust 31 ref. 278288rbr-0019 has a lug width of 16mm. This measurement refers to the internal distance between the two case lugs and is the essential parameter for selecting a compatible strap. It should not be confused with the Datejust 36mm or 41mm variants, which feature 20mm lug widths.

For the 18ct yellow gold case of the Datejust 31, the most suitable materials are alligator leather in cognac or bordeaux, vegetable-tanned calfskin, and shell cordovan. These materials complement the warm chromatic tone of yellow gold and develop a patina over time that harmonises with the natural ageing of the metal. A deployant clasp in yellow gold or champagne PVD completes the pairing with metallic consistency.

To replace the strap on the Datejust 31, a dedicated springbar tool is required to remove the spring bars from the 16mm lugs. It is advisable to work on a soft surface to protect the yellow gold case from scratches. Alternatively, Casati Milano atelier offers a professional strap-fitting service by appointment.

Yes. The Datejust 31 with its 16mm lug width is compatible with any aftermarket strap made to this standard measurement. Milano Straps offers a curated selection of handcrafted straps in leather, alligator, shell cordovan, and rubber, all available either bespoke or ready to purchase online in the 16mm strap section.

The lifespan of a leather strap depends on the material, tanning method, and daily use. A quality alligator or shell cordovan strap, properly maintained through regular cleaning, conditioning, and rotation with other straps, can last between 3 and 7 years while retaining its aesthetic qualities. Vegetable-tanned straps develop a patina over time that enhances their character and value.