Strap for Datejust 31 Yellow Gold / Fluted / Olive - Roman / Oyster

The lug width of the Rolex Datejust 31 ref. 278278-0029 is 16 millimetres. This is the exact distance between the spring bar holes that attach the strap to the watch case. Any bespoke strap must be crafted with a 16mm lug width to ensure a precise fit and correct functioning of the buckle or deployante.

Alligator leather is the most refined choice for a yellow gold Datejust 31: its fine grain texture creates an elegant contrast with the warm lustre of the gold, whilst the leather's structural durability ensures years of daily wear. Alternatively, soft calf leather in rose or burgundy tones enhances the feminine proportions of the 31mm case, or vegetable-tanned leather in natural brown that patinas towards amber tones in harmony with the gold's natural oxidation.

Changing the strap on a Datejust 31 is straightforward: using a spring bar tool, gently open the spring mechanisms on the pins that secure the strap to the case lugs. Remove the old strap and insert the new one, ensuring the pins click firmly into the lug sockets. If you are uncertain about the procedure, entrust the task to a trusted jeweller to avoid scratches on the case.

Yes, you can use a compatible aftermarket strap provided it is crafted with a 16mm lug width and designed for Rolex-category watches. A high-quality bespoke strap guarantees the same fit and reliability as the original model, whilst offering greater aesthetic versatility and cost sustainability over time. Milano Straps specialises in 16mm straps handcrafted with noble materials.

A quality natural leather strap, crafted in alligator or calf, typically lasts 5–7 years with daily wear. Longevity depends on frequency of wear, environmental conditions (humidity, direct sunlight) and maintenance routines. A vegetable-tanned leather strap ages more slowly and can last over 10 years, developing a fascinating patina with time. Casati Milano guarantees 18 months against manufacturing defects on all bespoke straps produced.