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

The lug width of the Rolex Datejust 31 278384rbr-0010 is 16mm. This dimension represents the distance between the strap attachment pins on the case. To verify correctly, measure with a digital calliper the distance between the centres of the two pin holes: you will obtain exactly 16mm.

The best strap depends on use and personal preference. For formal elegance, alligator with regular grain and white gold hardware is recommended, complementing the two-tone case perfectly. Vegetable-tanned calf leather offers robustness and evolving patina. For sporty versatility, rubber or NATO straps provide daily comfort whilst maintaining the watch's elegance.

Changing the Datejust 31 strap requires a specific tool (spring bar tool). Insert the tool into the groove of the attachment bar to compress the internal spring, remove the bar, extract the old strap and insert the new one. Ensure the bar locks correctly on both sides. If inexperienced, consult an authorised Rolex centre or specialist craftsman.

Yes, any strap with a 16mm lug width is compatible with the Datejust 31 ref. 278384rbr-0010. Quality aftermarket straps, crafted in alligator or calf leather, offer aesthetic alternatives to the original Rolex, maintaining perfect mechanical compatibility without requiring modifications.

A high-quality alligator or calf leather strap, with appropriate maintenance, lasts between 3 and 5 years with daily use. Longevity depends on UV exposure, humidity and type of tanning. Vegetable tanning guarantees greater durability than chemical tanning. Casati Milano provides an 18-month warranty against manufacturing defects.