Rolex
Datejust 31 178271-0003— lug 16mm

The Rolex Datejust 31 reference 178271-0003 features a 16mm lug width. This measurement is specific to the 31mm case and must be matched precisely when selecting any aftermarket or replacement strap to ensure a correct, play-free fit.

For the Datejust 31 in Rolesor Everose, an alligator strap in bordeaux or cognac complements the warm tones of the 18-carat rose gold. Alternatively, a vegetable-tanned calf leather strap develops a genuine patina over time. For daily intensive use, a rubber strap with a fine grain texture keeps the case protected without compromising the overall aesthetic.

To replace the strap, remove the 16mm spring bars using a dedicated springbar tool or a lug lever. Work on a soft surface to protect the case and lugs from scratching. If in doubt, it is advisable to entrust the operation to a watchmaker or the Casati Milano atelier to avoid damage to the polished or satin-brushed finish.

Yes, many artisan manufacturers produce straps compatible with the 16mm lug width of the Datejust 31. Milano Straps offers a curated selection of 16mm straps in leather, rubber and nylon specifically suited to this reference, available with a standard buckle or butterfly deployant clasp, in standard and bespoke lengths.

Longevity depends on the material and frequency of daily wear. A quality alligator strap, with regular maintenance, typically lasts between 2 and 4 years under daily use. Vegetable-tanned calf leather can exceed 3 years while developing a natural patina. Avoiding prolonged contact with water and perspiration significantly extends strap life. Casati Milano provides an 18-month guarantee against manufacturing defects.