Strap for Datejust 31 Stainless Steel Diamond / Jubilee / Pink - Diamond

The Rolex Datejust 31 reference 178384-0045 has a lug width of 16 mm. This is a non-standard measurement in the watchmaking landscape, narrower than the more common 18 mm or 20 mm, which requires careful selection of compatible straps. Before purchasing an aftermarket strap, it is advisable to verify the measurement using a digital calliper placed internally between the lugs, at the point of closest contact with the case.

For the Datejust 31 in white gold and steel, an alligator strap with vegetable tanning is the benchmark choice in terms of quality: the natural grain of the scales complements the cold reflections of the white gold bezel and develops a distinctive patina over time. Smooth calfskin is a more discreet alternative. For sport or summer use, a vulcanised rubber strap provides water resistance and durability. A deployant clasp is recommended to protect the leather from repeated bending.

Replacing the strap requires a double-tip spring bar tool to remove the spring bars securing the strap to the lugs. The operation should be carried out carefully to avoid scratching the steel case or the white gold bezel. If you are unfamiliar with the procedure, it is preferable to entrust the task to a watchmaker or specialist. Casati Milano artisan straps are supplied with spring bars already included.

Yes. Several artisan manufacturers produce straps with a 16 mm attachment compatible with the Datejust 31. It is essential to verify that the attachment width is exactly 16 mm and that the strap ends are correctly shaped to fit the curvature of the Rolex lugs. Milanostraps.it offers a selection of compatible 16mm straps in various materials and finishes, as well as the bespoke service by Casati Milano.

The lifespan of a leather strap depends on the quality of the material, frequency of use, and care in maintenance. A high-quality vegetable-tanned alligator strap, worn regularly and kept away from water and excessive perspiration, can last between 3 and 5 years while retaining its structural and aesthetic integrity. Shell cordovan tends to offer greater abrasion resistance than calfskin. The use of a deployant clasp significantly reduces mechanical stress on the leather, extending the strap's service life.