Strap for Portofino Automatic / Yellow Gold / White / Strap

The IWC Portofino IW3533-16 features a lug width of 20 millimetres. This dimension is determined by the proportions of the 38mm case and ensures both aesthetic balance and mechanical stability of the strap. You can verify the measurement by measuring the distance between the inner walls of the lugs.

For the Portofino IW3533-16 in yellow gold, we recommend Mississippi alligator in light brown or vegetable-tanned calf leather. Alligator amplifies the brightness of gold through its fine grain, whilst vegetable-tanned leather creates constructive contrast with more pronounced texture. The choice depends on intended use and personal aesthetic context.

The Portofino IW3533-16 strap is secured via a deployante clasp or pin buckle on the lugs. To remove it, use a dedicated spring bar tool, inserting the tip into the lateral groove of the lug and lifting with uniform pressure. Insert the new strap in reverse order until you hear the locking click.

Yes, milanostraps.it offers a complete collection of artisanal 20mm straps compatible with the Portofino IW3533-16. All straps are customisable in width, colour, initials and stitching type. Models are shipped ready for installation.

A quality leather strap (alligator, calf, shell cordovan) on a daily-wear wristwatch typically lasts 3-5 years before requiring maintenance. Longevity depends on exposure to perspiration, humidity and mechanical wear. Casati Milano offers 18 months warranty and restoration services for artisanal straps.