Strap for Datejust 31 Yellow Gold / Domed / Olive - Diamond / Oyster

The Rolex Datejust 31 278248-0017 has a lug width of 16mm. This measurement is specific to the 31mm Datejust case and must be matched precisely to ensure the strap fits correctly between the case lugs. Before purchasing an aftermarket strap, we recommend verifying the measurement using a digital calliper by measuring the internal distance between the two lugs.

For an 18-carat yellow gold case such as that of the Datejust 31 278248-0017, a polished alligator strap is the most technically and aesthetically coherent choice: the raised scales mirror the luminosity of the precious metal. Alternatively, vegetable-tanned leather or shell cordovan develop a natural patina that enhances the case over time. A yellow gold deployant clasp completes the metallic coordination with the case.

To replace the strap on a Rolex Datejust 31, a dedicated spring bar tool — a bifurcated-tip instrument — is required to compress the ends of the spring bar housed within the lugs. Insert the tip into the groove between the strap and the lug, compress the spring bar, and slide the strap free. Care must be taken to avoid scratching the gold case. If in doubt, it is advisable to entrust the operation to a watchmaker or the Casati Milano atelier.

Yes, high-quality aftermarket straps compatible with the Rolex Datejust 31 278248-0017 are available, provided they conform to the 16mm lug width. Milano Straps offers a curated selection of handcrafted 16mm straps, available bespoke or ready to purchase, in alligator, vegetable-tanned calf, shell cordovan, NATO and rubber. Each strap is supplied with spring bars and a coordinated keeper.

The lifespan of a leather strap depends on the material, care and frequency of use. A quality alligator strap, kept away from excessive moisture and treated periodically with a specific leather conditioner, can last between three and seven years with daily wear. Shell cordovan, owing to its dense and compact structure, tends to last longer. Vegetable-tanned straps develop a characteristic patina that improves over time. Milano Straps guarantees its straps for 18 months against manufacturing defects.