Strap for Datejust 31 Rose Gold / Fluted / White - Roman / President

The Rolex Datejust 31 ref. 278275-0019 has a lug width of 16mm. This measurement, proportionate to the 31mm case diameter, is not a common standard in mass-produced straps. It is advisable to use straps specifically manufactured for this size to ensure a precise fit and a clean line between the case and the strap.

For the Datejust 31 in Everose gold, an alligator strap in vegetable-tanned leather is the most coherent choice with the model's formal character. Alternatively, warm-toned grained calf leather — cognac, dark brown, or burgundy — pairs effectively with the rose gold tone. For less formal daily wear, smooth calf in anthracite grey or shell cordovan offer distinctive alternatives.

To replace the strap on the Datejust 31, you will need a double-ended spring bar tool. Compress the spring bars located within the case lugs, slide out the existing strap, and insert the new one, ensuring the spring bars engage correctly in their seats. It is recommended to work on a soft surface to avoid scratching the Everose gold case. If in doubt, consult a watchmaker or the Casati Milano atelier.

Yes, aftermarket straps compatible with the Datejust 31 ref. 278275-0019 are available, provided they are made to a 16mm lug width and with a heel thickness suited to the Rolex lug geometry. Casati Milano produces bespoke straps for this reference in alligator, calf leather, and shell cordovan, with customisable finishes. The artisanal construction quality guarantees fitting tolerances equal to or exceeding those of the original bracelet.

The lifespan of a leather strap depends on the material, care, and frequency of use. A quality alligator strap, treated with appropriate products and kept away from moisture and perspiration, can last between 3 and 7 years with regular wear. Calf leather typically lasts around 2 to 4 years. Shell cordovan, thanks to its dense fibre structure, tends to last longer and develops a distinctive patina over time. Casati Milano offers an 18-month warranty against manufacturing defects.