Strap for Portofino Automatic / Stainless Steel / Silver / Strap

The IWC Portofino IW3533-09 has a lug width of precisely 20mm. This measurement represents the distance between the two horizontal lugs protruding from the case. It is a critical parameter for selecting the correct strap: a 20mm lug width requires a strap specifically designed for that measurement, incompatible with 18mm or 22mm alternatives.

For the Portofino IW3533-09, we recommend alligator as the primary choice: its linear and fine grain perfectly complements the dial's sobriety. Shell cordovan is ideal for those seeking a durable, self-patinating leather. Calf leather represents an equally elegant alternative. For everyday wear, FKM rubber offers practicality without aesthetic compromise.

Strap replacement is straightforward: use a spring bar tool to push inward the small spring located beneath each lug. When the spring yields, the pin retracts and the strap detaches. Proceed with care to avoid damaging the lugs. Atelier Casati Milano offers guidance and assistance throughout the replacement process.

Yes, provided it is specifically manufactured for 20mm lugs. Many aftermarket straps are constructed for this measurement, which is a standard for quality dress watches. Always verify the specifications with the seller. Casati Milano straps are artisanal and built to order, guaranteeing perfect compatibility and superior durability.

Durability depends on the material and usage patterns. Alligator or vegetable-tanned shell cordovan lasts 3-5 years with daily wear. Quality calf leather offers similar longevity. FKM rubber is more durable. Atelier Casati Milano provides an 18-month warranty on all straps, with maintenance and reconditioning options available after the initial years.