Strap for Day-Date 40 White Gold - Diamond / Blue Roman

The lug width is precisely 20mm. This is a fixed and non-adjustable measurement, as the lugs are integrated into the white gold case and cannot be removed. It is essential to verify that the strap is constructed with bars dimensioned specifically for this measurement; otherwise, the fit will be imprecise and the watch's elegance will be compromised.

Nile alligator and shell cordovan are the most appropriate choices to enhance the grace and prestige of a Rolex President in white gold. Alligator offers fine, even grain with a patina that ages beautifully; shell cordovan develops an almost metallic depth that harmonises with white gold. For a contemporary alternative, Italian vegetable-tanned calf provides breathability and comfort, whilst rubber is ideal for summer wear whilst maintaining elegance.

The Day-Date 40 requires professional intervention. The integrated lugs do not permit manual removal as in other models. You must consult an authorised Rolex service centre or an experienced watchmaker, who will remove the pins with specialist tools. Never attempt DIY replacement, as the risk of scratching the case is substantial.

Yes. Bespoke artisanal straps with 20mm lug width are entirely compatible and represent an aesthetic option superior to official Rolex replacements. At Casati Milano you may select the material (alligator, shell cordovan, vegetable-tanned calf), craftsmanship, and buckle finish, obtaining a personalised strap. Alternatively, milanostraps.it stocks standard 20mm models ready for purchase.

Durability depends on material and usage. A high-quality artisanal alligator or shell cordovan strap, with proper care (rapid drying after humidity exposure, occasional natural creams), guarantees 5–8 years of intensive wear, longer if worn occasionally. Vegetable-tanned calf requires slightly more attention to moisture but offers comparable longevity. Casati Milano provides an 18-month warranty against manufacturing defects.