Strap for Datejust 31 Rose Gold / Domed / MOP / Oyster

The lug width of the Rolex Datejust 31 ref. 278245-0013 is 16mm. This measurement refers to the internal distance between the two lugs of the 31mm case and determines compatibility with aftermarket straps. It is specific to this variant and is not interchangeable with the Datejust 36 or 41, both of which feature 20mm lugs.

For the Datejust 31 in Everose gold, the most suitable straps are alligator belly or hornback in burgundy, dark chocolate or bordeaux tones, which complement the warm hue of the Everose alloy. Vegetable-tanned calfskin with a smooth finish offers a more understated everyday option. For maximum personalisation, shell cordovan develops a distinguished patina over time that enhances the character of the piece.

To replace the strap on a Datejust 31, a spring bar tool is required to release the spring bars securing the original bracelet to the 16mm lugs. Care must be taken to avoid scratching the Everose gold case: work on a soft surface and use tools with coated tips. If in doubt, a watchmaker or the Casati Milano atelier can perform the swap without risk.

Yes. Aftermarket straps with a 16mm lug width are fully compatible with the Datejust 31 ref. 278245-0013, provided the spring bars have the correct diameter for the original Rolex lugs. Milano Straps offers a curated selection of handcrafted leather, rubber and textile straps in 16mm, produced with premium materials and available in various lengths and finishes.

The lifespan of a leather strap depends on the material and daily care. A quality alligator strap, treated with nourishing cream and kept away from prolonged exposure to water and perspiration, typically lasts between 3 and 5 years with regular wear. Shell cordovan, owing to its compact fibre structure, can last well beyond 5 years while developing a prized patina. Milano Straps straps carry an 18-month guarantee against manufacturing defects.