Strap for Portofino 34 Stainless Steel / Silver / Santoni

The lug width of the IWC Portofino IW3574-03 is 16 millimetres. This measurement must be taken precisely between the inner shoulders of the case lugs to ensure perfect strap compatibility.

For this elegant dress watch, cognac brown alligator is the supreme choice for formal wear. Alternatively, black smooth calf leather offers maximum versatility, whilst shell cordovan guarantees an evolving patina over time. Selection depends upon predominant usage and personal colour preferences.

Strap replacement requires a spring bar tool with forked ends. Position the tool beneath the horizontal metal pin (spring bar) at each side of the case, gently push inward, then remove the old strap. Insert the new strap by securing the lugs into the anse seats. This operation is straightforward even for beginners.

Yes, any artisanal strap with a 16mm lug width is fully compatible with the IW3574-03, regardless of original brand. Milano Straps offers customised 16mm straps specifically tested on this model, with options of leather (alligator, cordovan, calf) and bespoke finishing.

A quality artisanal leather strap has an average lifespan of 3-5 years with regular wear, depending upon frequency of use and climatic conditions. Shell cordovan with vegetable tanning lasts up to 7-10 years. Periodic maintenance (gentle cleaning, air drying) significantly extends strap longevity.