Strap for Portofino Automatic Stainless Steel / Silver - Blue

The IWC Portofino IW3565-27 features a lug width of exactly 20 millimetres. This measurement represents the internal space between the two lugs on the case and remains constant. It is essential to verify this dimension with an internal digital calliper, excluding the spring bar, to ensure compatibility with any replacement strap.

For the Portofino IW3565-27, we recommend an alligator strap in black for formal settings, or vegetable-tanned calf for daily wear. If you prefer a more casual aesthetic, burgundy shell cordovan or a beige canvas military strap maintains the model's elegance with greater versatility. Your choice depends on the intended environment of use.

To change the strap on your Portofino IW3565-27, position the watch on a soft pad. Use a spring bar tool to extract the spring bar on the crown side, then slide the old strap outward. Insert the new 20mm strap by aligning the holes, then reinsert the spring bar with gentle movements until it clicks into place. Avoid forcing to prevent damage to the lugs.

Any strap with a 20mm lug width is compatible with the Portofino IW3565-27. You will find an extensive selection of artisanal straps online, customisable in leather (alligator, calf, shell cordovan), length, initials, and stitching colour. Always verify that the width is exactly 20mm before purchase.

The longevity of a leather strap depends on material quality and usage intensity. Quality calf leather typically lasts 3–4 years of daily intensive wear; shell cordovan easily reaches 5–6 years thanks to its natural elasticity; alligator, when used in less frequent settings, can endure beyond 5 years. With regular rotation among multiple straps and periodic maintenance, lifespan extends considerably.