Strap for Datejust 31 Stainless Steel Diamond / Oyster / MOP - Roman

The lug width of the Rolex Datejust 31 178384-0014 is 16 millimetres. This measurement is critical when selecting a compatible strap: it represents the distance between the two lugs (attachments) on the case where the strap sits. Always verify this dimension before ordering an aftermarket strap, as even a 2mm difference will render the strap incompatible with the case.

For the Datejust 31 178384-0014, recommended materials include vegetable-tanned alligator (dark cognac or tobacco), shell cordovan and smoked calf leather. Alligator is the noble choice that enhances the mother-of-pearl dial and white gold case. For daily wear, vegetable-tanned calf offers elegance and develops a natural patina that improves with age. Avoid overly thick straps, as the 16mm lug width requires refined proportions.

Changing the strap on a Rolex Datejust 31 requires a spring bar removal tool. Insert the tool gently beneath the lug attachment to compress the internal spring, then slide the strap downward. The reverse process applies the new strap. We recommend having this operation performed by a professional watchmaker to avoid damage to the case.

Yes. Any strap with a 16-millimetre lug width is compatible with the Datejust 31 178384-0014. Milano Straps offers a complete selection of handcrafted 16mm straps in alligator, shell cordovan, calf and rubber. We recommend browsing the online collection or contacting Casati Milano for personalised consultation on styling and material selection.

Durability depends on the material and level of use. High-quality vegetable-tanned alligator typically lasts 5-8 years with moderate wear and proper care (occasional cleaning, storage in a dry environment). Smoked calf leather has similar longevity but requires less visible maintenance. Rubber straps have greater longevity (8-12 years) but may lose elasticity over time. Rotating between multiple straps extends the lifespan of each.