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

The Rolex Datejust 31 reference 278248-0018 has a lug width of 16mm. This measurement applies to all aftermarket straps compatible with this model, regardless of material. It is always advisable to verify the lug width with a calliper placed inside the lugs before purchasing a replacement strap.

For a yellow gold 18kt case such as that of the 278248-0018, the most suitable straps are alligator in cognac or honey tones, which complement the warm hues of the metal. Alternatively, vegetable-tanned calf leather and shell cordovan offer refined understatement. The correct lug width is 16mm and a deployant clasp in yellow gold or PVD gold maintains metallic coherence with the case.

To replace the strap on a Datejust 31, a dedicated spring bar tool is required to release the spring bars holding the strap to the lugs. Improvised tools should be avoided on gold lugs to prevent scratching. Alternatively, a watchmaker or the Casati Milano atelier can perform the operation in a few minutes during a bespoke consultation.

Yes. Aftermarket straps with a 16mm lug width are fully compatible with the Rolex Datejust 31 278248-0018, provided the spring bars are of the correct length and the strap ends are precisely trimmed to size. Milano Straps offers a curated selection of handcrafted 16mm straps made specifically for this format.

The lifespan of a leather strap depends on the material, maintenance and frequency of wear. A quality alligator or shell cordovan strap, kept away from prolonged exposure to water and perspiration, will retain its structural and aesthetic integrity for 3 to 5 years with regular wear. Vegetable-tanned leather straps develop a personal patina over time that enhances their character. The Casati Milano guarantee covers manufacturing defects for 18 months.