Strap for Portofino Automatic Stainless Steel / White / Strap

The IWC Portofino IW3513-11 has a lug width of 18mm. This width is specific to the model and represents a structural balance with the 34mm case diameter. To verify it, measure the distance between the spring bar attachments of the strap without considering depth: the result must be exactly 18mm.

Natural alligator is the most coherent choice with the elegant and understated identity of the Portofino IW3513-11. The symmetrical texture and the patina that develops over time amplify the perception of discreet luxury. Alternatively, shell cordovan offers superior structure and an evolved patina, while vegetable-tanned calf remains valid for those seeking daily versatility.

The strap on the Portofino IW3513-11 is changed using a spring bar tool or a small screwdriver. Position the watch on a soft cloth, access the spring bar attachments from one side of the case, compress the pin with the tool, and the used strap will detach. Repeat for the other side. Insert the new 18mm strap by aligning the holes with the pins, and compress until you hear the locking click.

Any strap with an 18mm lug width is compatible with the Portofino IW3513-11. We recommend always manually verifying the width before purchase. On milanostraps.it you will find a complete selection of 18mm straps, handcrafted and customizable, made in alligator, shell cordovan, calf, and technical materials.

A quality natural leather strap (alligator or shell cordovan) typically lasts 3-5 years with moderate daily use. Longevity depends on the frequency of wear, exposure to moisture and temperature, and maintenance (avoiding prolonged contact with water). A vegetable-tanned calf strap has similar durability. Deterioration accelerates if the watch is worn continuously in humid environments or during intensive sports activities.