Strap for Datejust 31 Everose Fluted / President / White Roman

The lug width of the Rolex Datejust 31, reference 178275f-0028, is 16mm. This width is specific to this variant and represents an intermediate standard between ultra-compact models and Rolex sport watches. To verify this measurement with precision, use a digital calliper positioned from the top lug base to the bottom lug base, passing through the case lug holes. All compatible aftermarket straps must respect this 16mm specification.

The best strap depends on use context and personal preference. For classic elegance, alligator leather in black or medium brown represents the most traditional choice, amplifying the refined character of Everose gold. For those seeking aesthetic evolution over time, calf leather in vegetable tanning develops unique and organic patina. Shell cordovan offers exceptional durability with a naturally polished finish. At the Casati Milano atelier you can personally evaluate every leather and colour option to choose based on aesthetic rendering with your case.

Changing the strap on a Datejust 31 requires slight precision. Use a spring bar tool to access the attachment bars (lugs) through the lateral lug holes in the case. Insert the tool tip into the hole, apply controlled outward pressure until the upper attachment bar is freed. Repeat the procedure for the lower bar. The original strap will detach completely. To install the new strap in 16mm lug width, insert the bars into the two ends of the strap, then reposition the bars in the case lug holes until the locking click. This operation is reversible and does not cause permanent case damage.

All straps in 16mm lug width are compatible with the 178275f-0028. Rolex does not apply proprietary locks to the lugs, so compatibility depends exclusively on width. On milanostraps.it you will find the entire collection of artisanal 16mm straps, made in Italy at the Casati Milano atelier with materials such as alligator, calf, shell cordovan and natural rubber. Each strap is measurable upon request in the atelier to guarantee the perfect fit to your wrist.

The lifespan of a leather strap varies based on material, use and environmental conditions. A quality alligator strap, with a 16mm lug width correctly installed, offers 3-5 years of moderate daily use. Calf leather in vegetable tanning tends to last 2-4 years, developing visible patina over time. Shell cordovan is the most durable and can exceed 7-10 years with proper maintenance. Frequent exposure to water, sweat and UV rays accelerates ageing. Casati Milano straps include an 18-month warranty against manufacturing defects, and you can request partial restorations (buckle replacement, seam reconsolidation) during the entire useful life of the strap.