Strap for Datejust 31 Rolesor Yellow Fluted Diamond / Jubilee / Champagne Floral

The Rolex Datejust 31 reference 178313-0073 features a 31mm case with a lug width of 16mm. This measurement is taken between the two lugs at the point where the strap is inserted, and is specific to the 31mm Datejust variants, differing from the 36mm or 41mm versions which use 20mm lugs.

For the two-tone steel and yellow gold case of the Datejust 31 178313-0073, vegetable-tanned alligator leather is the most coherent choice: its regular grain develops a natural patina over time that complements the polished gold components. Alternatively, box calf or shell cordovan in cognac tones offer refined understatement. For less formal settings, a nylon NATO or vulcanised rubber strap provides practicality without aesthetic compromise.

Replacing the strap on the Datejust 31 178313-0073 requires a proper springbar tool to remove the spring bars from the 16mm lugs. Work on a soft surface to protect the case and use a quality tool to avoid scratching the lug tips. If in doubt, entrust the operation to a watchmaker or to the Casati Milano atelier for a precise, risk-free result.

Yes, a wide range of aftermarket straps are compatible with the Rolex Datejust 31 178313-0073, provided they feature a 16mm lug width. Milano Straps offers a curated selection of handcrafted straps in various leathers and finishes, tailored to fit 16mm lugs with sartorial precision. Options include alligator, calf, shell cordovan and other materials, with deployant clasp or pin buckle closure.

The lifespan of a leather strap depends on material quality, tanning method and daily use. A high-quality vegetable-tanned alligator strap, properly maintained and rotated with other straps, can last between 3 and 5 years while retaining structural integrity and patina. Calf leather straps tend to have a slightly shorter lifespan. Casati Milano provides an 18-month guarantee against manufacturing defects on all straps.