Strap for Datejust 31 Rolesor Yellow Domed / Jubilee / Olive Roman

The Rolex Datejust 31 reference 178243-0079 features a lug width of 16mm. This measurement is less common among contemporary high-end watch models and requires careful selection from straps specifically compatible with a 16mm attachment. To verify independently, use a digital calliper to measure the internal distance between the two lugs with the original strap fitted.

For the Datejust 31 in yellow Rolesor, the most suitable materials are hornback or mississippiensis alligator — which complements the texture of the bi-metal case — and vegetable-tanned calf leather, which develops a personal patina over time. Shell cordovan suits more formal occasions, while a nylon NATO strap lightens the overall character for daily wear. A deployant clasp is recommended to preserve the leather strap and ensure consistent wrist fit.

To replace the strap on the Datejust 31, a quality springbar tool or precision screwdriver is required to remove the spring bars securing the strap to the lugs. It is advisable to work on a soft surface to protect the case. The new 16mm strap is fitted by compressing and inserting the spring bars into the lug holes. The process requires care but no advanced watchmaking skills.

Yes, high-quality aftermarket straps compatible with the Datejust 31 178243-0079 are available, provided they feature a 16mm lug width. Milano Straps offers a curated selection of handcrafted straps in this size, available online. Through the Casati Milano atelier, fully bespoke straps can be commissioned, with the client choosing the leather, colour, stitching and closure type.

The lifespan of a leather strap depends on the material, care routine and frequency of use. A quality alligator strap, rotated regularly and stored correctly, can last between three and five years while retaining its structural and aesthetic integrity. Vegetable-tanned calf leather develops character over time but requires greater care in humid conditions. Milano Straps provides an 18-month warranty against manufacturing defects on all straps.