Strap for Datejust 31 Stainless Steel/ Rose Gold / Diamond / MOP / Jubilee

The lug width of the Rolex Datejust 31 ref. 278381rbr-0026 is exactly 16mm, measured between the two horns of the Oyster case at the strap attachment point. This is a dimension specific to the 31mm case size, distinct from the 20mm found on the Datejust 36. Straps must be produced to a precise 16mm width to ensure correct fitment.

For the Datejust 31 in Everose Rolesor with a mother-of-pearl dial, an alligator strap in vegetable-tanned leather in shades of tobacco, bordeaux or greige offers the most coherent match: the grain texture complements the iridescence of the dial and harmonises with the warm tones of Everose gold. Smooth calf leather in ivory or greige is a more understated alternative. For aquatic environments, vulcanised rubber ensures durability while respecting the watch's water resistance rating.

To replace the strap on the Datejust 31 ref. 278381rbr-0026, a springbar tool is required to compress the spring bars housed in the lug holes. Care must be taken not to scratch the polished surfaces of the Oystersteel and Everose gold case. It is advisable to entrust the first strap change to a watchmaker or specialist atelier to avoid accidental damage.

Yes, the aftermarket offers straps compatible with the Rolex Datejust 31 at 16mm lug width. Milano Straps crafts bespoke straps in alligator, calfskin and other materials, precisely calibrated to 16mm with a profile suited to the Oyster lugs. It is essential to verify that the width is exactly 16mm and that the spring bar diameter matches the lug holes of this reference.

The lifespan of a leather strap on a Rolex Datejust 31 depends on leather quality, tanning method and daily use. A high-grade alligator strap in vegetable-tanned leather, properly maintained and kept away from prolonged moisture and perspiration, can last between three and six years while developing a distinguished patina. Shell cordovan and premium calfskin straps behave similarly. Milano Straps provides an 18-month warranty against manufacturing defects on all its straps.