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

The Rolex Datejust 31 ref. 278381rbr-0024 has a lug width of 16mm. This measurement refers to the internal distance between the case lugs and can be verified with a vernier calliper. When selecting an aftermarket strap, it is essential to choose one specifically made for a 16mm lug width to ensure a precise, gap-free fit.

For the two-tone Everose gold and steel configuration of the Datejust 31, an alligator Porosus strap in tobacco, cognac or bordeaux offers the most coherent aesthetic pairing. Shell cordovan provides a smooth surface that develops a rich patina over time, complementing the warm tones of the Everose gold. Vulcanised FKM rubber is the recommended choice for more active or aquatic use.

The strap on the Datejust 31 is secured via 16mm spring bars inserted into the lug holes. To remove the strap, use a spring bar tool to compress and release each bar from its notch. It is advisable to place a soft cloth over the case to prevent scratching the polished and brushed surfaces. For first-time replacements, professional assistance from a watchmaker is recommended.

Yes. Any strap with a 16mm lug width and a straight or slightly tapered end profile will be compatible with the Datejust 31. Milano Straps offers a curated range of handcrafted leather, rubber and textile straps made specifically for this lug width, available online or bespoke through the Casati Milano atelier.

Longevity depends on the material and frequency of wear. A high-quality alligator strap, properly maintained with a neutral leather conditioner and protected from prolonged moisture exposure, will typically last between three and five years of daily use. Shell cordovan, owing to its dense fibre structure, often exceeds this range. Regular contact with perspiration, perfume or water will accelerate wear on any leather.