Strap for Datejust 31 White Gold Diamond / President / Silver Diamond

The lug width of the Rolex Datejust 31 178159-0010 is 16 mm. This measurement defines compatibility with any aftermarket strap. The 16 mm is measured between the two spring bars that connect the strap to the case lugs. It is a non-standard specification compared to more common widths such as 18 or 20 mm, owing to the proportions of the 31 mm white gold case.

Alligator remains the most elegant choice for this model: the regular texture of the scales and the patina that evolves over time dialogue perfectly with white gold. Vegetable-tanned calf is an excellent alternative if you prefer a less formal approach; it ages gracefully and develops caramel tones that reflect the natural evolution of the case. Rubber and NATO options are valid if you desire versatility: they transform the watch into a more sporty instrument while maintaining stylistic dignity.

Strap replacement requires access to the spring bars of the case. If you have the correct tools (spring bar tool and precision tweezers), you can perform the operation autonomously: gently release the old strap by loosening the pin on one side, extract the pin completely from both the case and lug hole, then insert the new strap by repeating the reverse procedure. If unfamiliar with this process, it is advisable to contact a watchmaker or specialised atelier such as Casati Milano, which guarantees not only correct installation but also ongoing maintenance.

Yes, provided the strap has a lug width of 16 mm. Quality aftermarket straps maintain the tolerances necessary for secure and comfortable attachment to the Rolex case. Always verify that the strap has been specifically designed for this lug width: universal straps or those with poor tolerances may cause excessive movement or friction that compromises case integrity. Specialised suppliers and bespoke ateliers guarantee certified compatibility.

The lifespan of a leather strap depends on material quality and daily use. A Hermès-grade alligator or vegetable-tanned calf typically lasts between 3 and 5 years of regular wear. Ageing is part of the appeal: leather develops patina, hues and character, though its thickness gradually decreases. With proper care (avoid excessive perspiration and prolonged moisture), longevity increases significantly. Casati Milano offers an 18-month warranty against manufacturing defects and can regenerate worn straps by rebuilding the reverse side or keeper without altering the original structure.