Rolex
Datejust 31 278245-0029— lug 16mm

The Rolex Datejust 31 ref. 278245-0029 has a lug width of 16mm. This measurement, taken with a digital calliper between the two lugs at the base of the case, is essential when selecting a compatible aftermarket strap. Straps sized at 17mm or 18mm will not fit correctly and may cause damage to the Everose gold lug surfaces.

For the Datejust 31 in Everose gold, an alligator strap in vegetable-tanned leather is the most coherent choice given the watch's calibre: the barrel-shaped grain develops a genuine patina over time. Alternatively, smooth polished or satin-finished calf leather in warm tones — cognac, tobacco, mahogany — complements the rose gold palette effectively. For less formal settings, matte calf leather or vulcanised rubber are solid alternatives.

The strap on the Datejust 31 is secured via springbars within the 16mm lugs. To replace it, use a fine-tipped springbar tool: insert the tip into the lug hole, compress the springbar and slide the strap free. The process takes approximately two minutes and requires no professional tools, provided you work on a soft surface to protect the Everose gold case from scratches.

Yes. Several artisan manufacturers produce straps with a 16mm lug width compatible with the Datejust 31. Milano Straps offers a curated selection of 16mm straps in alligator, calf, shell cordovan and nylon, fitted with steel or rose gold PVD buckles and deployant clasps. Compatibility is ensured by the 16mm lug width and the curved strap ends, shaped to follow the Rolex lug profile.

The lifespan of a leather strap depends on the quality of the tanning process, frequency of use, and exposure to perspiration and environmental conditions. A high-quality vegetable-tanned alligator strap, worn daily with moderate intensity, typically lasts between three and five years while retaining its structural and aesthetic integrity. Milano Straps products carry an 18-month warranty against manufacturing defects.