Strap for Portofino Automatic Stainless Steel / Silver

The lug width of the IWC Portofino IW3565-17 is 20mm. This dimension represents the width of the space between the lugs where the strap is inserted. It is important to distinguish this measurement from the total strap length: the 20mm is measured perpendicularly from inside to inside of the passanterie, at the articulation pins.

For the Portofino IW3565-17 we recommend an alligator strap—the regularity of the longitudinal grain amplifies the rectangular geometry of the case. Alternatively, vegetable-tanned calf leather guarantees a patina that evolves over the years, or a rubber strap for daily wear and water resistance. Shell cordovan remains a choice for those seeking legendary longevity.

Position the watch on a soft support and identify the pins that run through the lugs. Use a spring bar tool to apply gentle upward pressure, compressing the internal spring of the pin and allowing it to be extracted. Remove the old strap and insert the new one, ensuring that the pin clicks correctly into both seats. Avoid forcing to prevent damage to the steel lugs.

Yes, absolutely. Any quality strap with a 20mm lug width is compatible with the Portofino IW3565-17. On MilanoStraps you will find a collection of artisanal aftermarket straps, customizable in leather, color, size and stitching details, which guarantee guaranteed compatibility and superior finish to standard products.

A quality leather strap on an IWC Portofino IW3565-17 lasts an average of 3-5 years with daily use, depending on the leather. Alligator lasts longer (5-7 years), shell cordovan even longer (10+ years). Vegetable-tanned calf develops visible patina within 1-2 years. Wear accelerates if exposed to sweat, constant humidity or repetitive movement. The 18-month warranty from Casati Milano covers manufacturing defects and allows partial replacements.