Rolex
Datejust 31 178341-0037— lug 16mm

The Rolex Datejust 31 ref. 178341-0037 has a lug width of 16mm. This measurement should be taken with a digital calliper between the two lugs, flush against the caseback. Only a strap with a 16mm lug end will fit without forcing.

For the Datejust 31 in Rolesor Everose, alligator leather in bordeaux or cognac tones offers the most coherent pairing with the watch's formal character. Vegetable-tanned calf leather or shell cordovan are excellent alternatives, developing a refined patina over time. A deployant clasp in rose gold completes the combination with material consistency.

To remove the original bracelet or strap, a fine-tipped springbar tool is required. The springbars are compressed by pressing against the inner lug seat. Care must be taken to avoid scratching the polished Everose gold lug surfaces. It is advisable to have the swap performed by a skilled watchmaker or to use professional-grade tools.

Yes. Aftermarket straps with a 16mm lug width and quality artisan construction are fully compatible with the Datejust 31 ref. 178341-0037. Milano Straps offers a curated selection in alligator, calf leather, shell cordovan and rubber, all hand-finished and available with a buckle or deployant clasp in steel or rose gold.

The lifespan of a leather strap depends on the quality of the hide, the tanning method and daily wear conditions. An artisan-crafted alligator or shell cordovan strap with vegetable tanning and hand finishing can last between 3 and 6 years with proper care: avoid prolonged contact with water and perspiration, and store the watch without the strap under tension. Milano Straps straps carry an 18-month guarantee against manufacturing defects.