Strap for Portofino Automatic White Gold / Silver / Diamond

The lug width of the IWC Portofino IW3565-14 is 20mm. This width is standard for the model and represents the distance between the lugs where the strap attaches to the case. An aftermarket strap must be specifically ordered with a 20mm lug width to ensure perfect compatibility and zero structural play.

For a white gold model, genuine alligator and vegetable-tanned calf leather are the most recommended materials. Alligator in cacao or medium brown tones creates a natural elegant contrast, whilst calf leather develops a patina that harmonises with the metal's ageing. High-grade shell cordovan also enhances the luminous reflection of the white gold case.

Strap replacement on the Portofino IW3565-14 is performed via the case lugs. Using a dedicated tool (spring bar removal tool) or precision instrument, remove the metal spring bar that secures the strap to the lug. Once extracted, the strap slides off easily. To install a new strap, align the end with the lug hole and reinsert the spring bar with uniform pressure until a click indicates secure seating. It is advisable to perform this operation on a soft surface to prevent scratches.

Yes, provided the strap is specifically constructed with a 20mm lug width. Bespoke artisan straps available from milanostraps.it guarantee identical width and IWC manufacturing tolerances, enabling swift and secure replacement without structural compromise. Artisan craftsmanship adds character and longevity compared to generic OEM alternatives.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily wear, depending on exposure to perspiration, humidity and UV radiation. Vegetable tanning develops a protective patina that extends useful life. Regular maintenance—cleaning with a damp cloth, drying, and occasional balm treatment—can extend durability to 7 years. Atelier Casati Milano provides an 18-month warranty on all bespoke straps.