Strap for Datejust 31 Rose Gold / Domed / Grey - Roman / Oyster

The Rolex Datejust 31 ref. 278245-0031 has a lug width of 16mm, measured between the two inner horns of the case. This dimension determines compatibility with any aftermarket strap. For an accurate measurement, use a digital calliper with the bracelet removed.

For the Datejust 31 in Everose gold, an alligator strap with vegetable tanning is the most fitting choice: the belly grain complements the texture of the bezel and the warmth of the gold. Box calf leather offers a quieter yet equally formal profile for everyday wear, while shell cordovan develops a distinctive patina over time. A butterfly deployant clasp is preferable to a standard buckle for even tension distribution.

Removing the original bracelet requires a fine-tipped springbar tool, inserted into the small notch on each lug to release the retaining spring bar. Care must be taken not to scratch the Everose gold case; it is advisable to protect the surface with masking tape or to entrust the operation to a watchmaker or the Casati Milano atelier.

Yes. Any strap with a 16mm attachment is compatible with the Datejust 31 ref. 278245-0031, provided the end curvature matches the profile of Rolex lugs. Milanostraps.it offers a curated selection of handcrafted 16mm straps in various materials — alligator, calf leather, shell cordovan, rubber — designed to fit the lugs of this specific model precisely.

The lifespan of a leather strap depends on the quality of the tanning, leather thickness, and conditions of use. A vegetable-tanned alligator or shell cordovan strap, handled with care and rotated regularly, can last between 3 and 7 years while developing a fine patina. Prolonged exposure to water, excessive perspiration, and perfumes should be avoided, as these degrade the leather fibres. Casati Milano straps carry an 18-month warranty against manufacturing defects.