Strap for Datejust 31 Rose Gold / Fluted / Butterfly / President

The lug width of the Rolex Datejust 31 ref. 278275-0021 is 16mm. This measurement refers to the internal distance between the two lugs of the case, best measured with a digital calliper at the lower section, close to the caseback. All compatible aftermarket straps must feature a 16mm attachment end.

For the Datejust 31 in Everose gold, alligator leather straps in polished bordeaux or cognac offer the most harmonious pairing with the warm tone of rose gold. Shell cordovan provides a dense, almost glassy surface with subtle reflections, while vegetable-tanned calf leather develops a distinctive patina over time. A deployant clasp reduces wear on the strap holes and improves daily comfort.

To replace the strap on a Datejust 31, you will need a dedicated springbar tool or a flat-lever tool. The springbars must be compressed laterally to release them from the case lugs. It is advisable to work on a soft surface to avoid scratching the Everose gold case. If in doubt, entrust the operation to a qualified watchmaker or visit the Casati Milano atelier.

Yes, high-quality aftermarket straps are available for the Rolex Datejust 31 ref. 278275-0021. The key specification is a straight 16mm attachment end. Milanostraps.it offers a curated selection of handcrafted straps in alligator, calf leather, shell cordovan, and rubber, available either as bespoke commissions or ready to purchase online, all compatible with the 16mm lugs of this reference.

The lifespan of a leather strap depends on the material, care routine, and frequency of wear. A quality alligator strap, kept away from excessive moisture and occasionally conditioned, can last between three and five years with daily use. Vegetable-tanned calf leather develops character over time but is more sensitive to water. Shell cordovan, owing to its dense fibre structure, is among the most durable options. Using a deployant clasp reduces mechanical stress on the first strap holes, significantly extending the strap's useful life.