Strap for Datejust 31 Rolesor Everose Domed / Jubilee / Black Roman

The Rolex Datejust 31 ref. 178241-0065 has a lug width of 16mm. This measurement is specific to the mid-size 31mm case and is not interchangeable with straps for the Datejust 36mm (20mm) or the Lady-Datejust 28mm (13mm). Always verify the lug width with a calliper before purchasing an aftermarket strap.

For the Datejust 31 in steel and Everose gold, a fine-grain alligator strap with a glossy finish is the most coherent choice for the bi-material case. Alternatively, a vegetable-tanned calf leather strap in cognac or burgundy develops a natural patina that complements the character of the watch. For a more casual wear, a tightly woven nylon NATO strap offers a deliberate contrast with the Everose gold.

Strap replacement requires a spring bar tool sized for 16mm spring bars. Insert the tool between the lug and the strap end, compress the spring bar and slide the strap out of the lug. The process is reversible and does not require professional tools, but it is advisable to work on a soft surface to avoid scratching the case or the lug edges.

Yes. Several artisan manufacturers, including Milano Straps, produce aftermarket straps with a 16mm lug width compatible with the Datejust 31 ref. 178241-0065. Straps are available in various materials — alligator, calf leather, shell cordovan, NATO, rubber — and can be made bespoke at the Casati Milano atelier. Compatibility is ensured by the 16mm lug width and the correct heel curvature of the strap.

Longevity depends on the material and daily use. A quality alligator strap, with proper care and alternating wear, can last between three and five years. Vegetable-tanned calf leather has a similar lifespan but develops a patina that enhances its appearance over time. Factors that accelerate deterioration include perspiration, prolonged water exposure and direct sunlight. Milano Straps straps carry an 18-month guarantee against manufacturing defects.