Strap for Datejust 31 Stainless Steel Fluted / Jubilee / Grey - Roman

The lug width (ansa width) of the Rolex Datejust 31 reference 278274-0028 is 16mm. This measurement should be verified using a digital calliper on the internal width of the case lugs, ensuring accuracy when selecting a compatible strap.

For the two-tone steel and white gold configuration, alligator leather in dark brown or black represents the most balanced aesthetic choice, emphasising the understated elegance of the case. Alternatively, burgundy shell cordovan offers daily versatility with natural patina development.

Strap removal requires a spring bar tool to disengage the pins from the lugs. Position the watch on a stable surface, insert the thin blade under the spring bar, apply gentle pressure to compress the internal spring, and slide the pin free from the lug. Repeat on the opposite side, then install the new strap by reversing the procedure.

Yes, provided the lug width is exactly 16mm. Artisanal quality leather straps (alligator, calf, shell cordovan) or rubber are fully compatible with the Datejust 31. Always verify the measurement before purchase to avoid lateral play on the lugs.

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) withstands 3-5 years of daily use whilst developing natural patina and aesthetic character. Longevity depends on environmental exposure (humidity, direct sunlight), cleaning frequency, and tanning robustness. Casati Milano straps include an 18-month warranty against manufacturing defects.