Strap for Datejust 31 Yellow Gold / Fluted / Malachite / Oyster

The Rolex Datejust 31 278278-0003 has a lug width of 16mm. This measurement is taken with a digital calliper between the inner faces of the two lugs at the bottom of the case. It is a non-standard dimension compared to the more common 18mm and 20mm sizes, and requires straps manufactured specifically for this calibre.

For an 18-carat yellow gold case, the most suitable materials are classic-grain alligator in cognac or gloss black tones, shell cordovan for a more distinctive visual signature, and vegetable-tanned calf leather for a restrained aesthetic that develops a natural patina over time. An 18-carat yellow gold deployant clasp is the most coherent closure choice to match the case metal.

The strap is removed using a fine-tipped springbar tool, inserted into the lateral lug hole to compress the springbars. When working on an 18-carat yellow gold case, it is advisable to operate on a soft cushion to prevent case scratches. For artisan straps with narrow keeper loops, it is recommended to have the replacement carried out by a watchmaker or at the atelier.

Yes. Compatible aftermarket straps must have a lug width of 16mm and standard springbars. Milanostraps.it offers a selection of handcrafted straps in alligator, calf leather, shell cordovan and rubber, made to measure for this width, with millimetre-precise fitting and buckle or deployant clasp options in various metal finishes.

The lifespan of a leather strap depends on the material, care routine and intensity of use. A quality vegetable-tanned alligator strap, kept away from excessive water and perspiration and treated periodically with appropriate leather conditioner, will retain its structural and aesthetic integrity for 3 to 6 years or more. Shell cordovan, owing to its dense fibre structure, tends to last even longer while developing a distinctive patina. Milanostraps.it provides an 18-month guarantee against manufacturing defects on all straps.