Rolex
Datejust 31 278271-0018— lug 16mm

The lug width of the Rolex Datejust 31 278271-0018 is 16 mm. This measurement is taken with a calliper between the two lower lugs, directly against the case, and determines the compatibility of any aftermarket strap with this reference.

For the Datejust 31 in Everose gold and Oystersteel, polished Mississippiensis alligator or shell cordovan straps are the most coherent choices in terms of material quality. Vegetable-tanned calf leather is the preferred daily-wear option, developing a distinctive patina over time. For summer or aquatic use, vulcanised rubber offers water resistance and thermal comfort.

Strap replacement requires a spring bar tool or lever-type tool to remove the spring bars securing the strap to the 16 mm lugs. The operation is straightforward but must be performed carefully to avoid scratching the polished case surfaces. The Casati Milano atelier also offers an in-house fitting service.

Yes, any strap with a 16 mm lug width is technically compatible with the Datejust 31 278271-0018. Milano Straps offers a curated selection of handcrafted straps in various leathers and materials, fitted with standard 16 mm spring bars and available with either a tang buckle or deployant clasp.

The lifespan of a leather strap depends on material quality and frequency of use. A high-grade alligator or shell cordovan strap, with proper care, can last between three and six years with daily wear. Vegetable-tanned calf leather, though less resistant to moisture, develops a patina prized by collectors. Milano Straps straps are covered by an 18-month warranty against manufacturing defects.