Strap for Datejust 31 Rolesor Yellow Domed Diamond / Oyster / Olive Green Roman

The lug width of the Rolex Datejust 31 reference 178343-0001 is 16mm. This measurement is taken with a digital calliper between the inner faces of the lugs, at the point where the spring bar sits. It is important not to confuse this with the Datejust 36mm (20mm lugs) or 28mm (13mm lugs), which belong to the same family but have different lug geometries.

For the Datejust 31 178343-0001 in steel and yellow gold, an alligator strap in vegetable-tanned leather is the most coherent choice with the watch's dress character. Smooth calf leather is a practical everyday alternative, while vulcanised rubber suits more active use. A deployant clasp in steel or yellow gold is the most appropriate closure to maintain visual symmetry with the case materials.

The strap on the Rolex Datejust 31 is removed using a spring bar tool, which compresses the spring bars within the lugs. It is advisable to work on a soft surface to avoid scratching the case. Standard 16mm spring bars with a 1.5mm diameter are compatible with this model. If in doubt, it is best to consult a watchmaker or the Casati Milano atelier.

Yes, there are many aftermarket straps compatible with the Rolex Datejust 31 178343-0001. The key requirements are a 16mm lug width and straight ends. Milano Straps offers a curated selection of handcrafted straps in various leathers and materials, made to order by the Casati Milano atelier or available ready-to-ship online in the 16mm format.

The lifespan of a leather strap depends on the quality of the hide, the tanning process, and daily use. A high-quality vegetable-tanned alligator strap, kept away from prolonged water exposure and occasionally treated with a neutral conditioner, can last between 3 and 7 years with regular use. Calf leather tends to wear more quickly but develops a distinctive patina over time. The Casati Milano guarantee covers manufacturing defects for 18 months.