Strap for Datejust 31 Rose Gold / Fluted / Chocolate - Roman / Oyster

The Rolex Datejust 31 Ref. 278275-0024 has a lug width of 16mm, measured internally between the two case lugs. This is the standard measurement for the 31mm versions of the Datejust family and is not interchangeable with the lugs of the 36mm or 41mm variants.

For an 18-carat Everose gold case, the most suitable materials are vegetable-tanned alligator leather — whose natural geometric texture contrasts beautifully with the warm metal — and shell cordovan, valued for its dense, near-mirror surface. Box-calf in burgundy, tobacco or bottle green works well for daily wear. All options must feature a 16mm lug width.

The strap is removed using a dedicated spring bar tool or a thin flat-head screwdriver to compress the spring bars within the lugs. This is a delicate operation on a gold case: it is advisable to protect surfaces with PTFE tape or to entrust the work to a watchmaker. Rolex original spring bars have a 1.8mm diameter; quality aftermarket straps include compatible replacement bars.

Yes. Any strap with a 16mm lug width and standard spring bars is technically compatible. milanostraps.it offers a curated selection of handcrafted 16mm straps in alligator, calf leather, shell cordovan and NATO, all verified for this model. Casati Milano also produces bespoke straps with the option to select leather, colour, stitching and buckle or deployant clasp.

Longevity depends on the material and care. A quality shell cordovan or vegetable-tanned alligator strap, with moderate daily use, typically lasts 3 to 5 years before showing significant wear. Perspiration is the primary enemy of leather: prolonged exposure to moisture should be avoided, and rotating between straps is recommended. Casati Milano straps carry an 18-month guarantee against manufacturing defects.