Rolex
Datejust 31 278243-0025— lug 16mm

The Rolex Datejust 31 reference 278243-0025 features a 16-millimetre lug width. This specific measurement is the construction standard for the 31mm case, ensuring optimal visual proportions between the attachment points and the two-tone yellow gold and stainless steel case.

Given the two-tone yellow gold and stainless steel case, the most recommended options are dark brown alligator with 16mm lugs, or vegetable-tanned calf leather for a more sophisticated, vintage aesthetic. For sporty applications, a neutral nato maintains chromatic equilibrium. Selection depends on context: alligator for formal settings, calf or nato for daily wear.

The Datejust 31 strap is changed using a dedicated spring bar tool, gently extracting the springs from the case attachment points. For models equipped with a Rolex deployante buckle, verify the release mechanism on the buckle's reverse side. We recommend working on a soft surface to avoid scratches, or consult a professional technician for replacement.

Yes, you can install aftermarket straps compatible with 16mm lug width on your Datejust 31. Milano Straps offers a curated selection of leather, rubber, and nato straps, all tested on Rolex models of this specification. Artisanal quality ensures precise fit and long-term durability whilst preserving the watch's elegance.

Leather strap longevity depends on usage frequency, climate conditions, and tanning method. A high-quality artisanal strap in alligator or vegetable-tanned calf leather typically lasts 3–5 years under moderate daily use. Regular maintenance (gentle cleaning, air-drying after moisture exposure) significantly extends lifespan. Milano Straps provides an 18-month warranty covering manufacturing defects.