Strap for Portofino Automatic / Rose Gold / Black / Strap

The IWC Portofino IW3533-20 features a lug width of 20 millimetres. This measurement is essential for selecting a compatible strap and ensuring perfect accommodation of the case lugs without unnatural compression or excessive play.

For the Portofino IW3533-20 in rose gold, the most suitable materials are smoked alligator (which creates an elegant contrast with the precious case), vegetable-tanned calf (which evolves naturally over time), and shell cordovan (which develops a deep dark patina). The choice depends on occasion and desired maintenance level.

The strap is changed by removing the two spring bars (one-piece or removable) that connect the case lugs. Using a spring bar tool, you compress the pin from one side to release it from the lower lug shoulder, then extract it completely. The new 20mm strap is inserted the same way, ensuring the pin is firmly seated in both shoulders.

Yes, any artisanal strap constructed for a 20-millimetre lug width is fully compatible with the Portofino IW3533-20. Quality aftermarket straps, such as those available on milanostraps.it, often provide more material options and customisation than original IWC straps.

The lifespan of a leather strap depends on material and usage. Vegetable-tanned calf lasts approximately 3-5 years with regular maintenance (cleaning and conditioning); shell cordovan, due to its natural density, can reach 5-7 years; alligator, if properly protected, exceeds 5 years. Atelier Casati Milano provides straps with an 18-month warranty.