Strap for Portofino Automatic Yellow Gold / White - Roman / Strap

The lug width of the IWC Portofino IW3513-27 is 18 mm. This measurement must be strictly observed when purchasing a replacement strap to guarantee perfect compatibility with the case lugs. Always measure from inside to inside of the attachment points to verify the exact measurement.

For the Portofino IW3513-27 in yellow gold we recommend brown or black alligator, vegetable-tanned calf in cognac or grey tones, or shell cordovan for rich patina. The choice depends on use: formal occasions require alligator or refined calf, daily wear allows more versatile combinations with structured rubber. All straps must have an 18 mm lug width.

Position the watch on a soft surface with the case facing upward. Use a spring bar tool or dedicated instrument to compress the spring bar mechanisms and remove the worn strap. Insert the new strap by aligning the holes at the extremities, then reinsert the spring bars into the case lugs until they click into place. Verify that the strap is securely anchored before wearing the watch.

Yes, any strap with an 18 mm lug width is compatible with the Portofino IW3513-27. Artisanal straps from milanostraps.it are crafted with specific attention to the proportions of the IWC case and offer premium materials (alligator, calf, shell cordovan, rubber) with customization in sizes, initials, and stitching thread.

Durability depends on the material and usage. An alligator or shell cordovan strap lasts 3-5 years with daily wear, calf 2-4 years. Vegetable tanning ensures dignified patina and predictable wear. With regular maintenance (gentle cleaning, protection from moisture, rotation with other straps), longevity increases significantly. Straps from Casati Milano include an 18-month warranty.