Strap for Portofino Automatic Rose Gold / Silver

The lug width of the IWC Portofino IW3563-06 is 20 millimetres. This dimension is specific to this 39mm case configuration and represents the standard for all examples of this reference. To verify precisely, measure the distance between the spring bar holes using a digital calliper.

Alligator is the natural choice: the ordered scale texture and patina that evolves over time harmonises perfectly with rose gold ageing. Vegetable-tanned calf and shell cordovan are also excellent alternatives, whilst technical rubber offers contemporary versatility whilst maintaining gravity.

The Portofino uses spring bar attachments. Equip yourself with a spring bar tool, insert the curved tip into the lateral hole of the lug, compress the internal spring and remove the pin. Proceed with care to avoid scratching the rose gold case. For professional results, contact Casati Milano atelier.

Yes, provided it is made specifically for the 20mm lug width. Many generic 20mm straps do not account for IWC lug thickness: verify product specifications before purchase. Quality bespoke straps from Casati Milano guarantee perfect compatibility and risk-free assembly.

Lifespan depends on usage and materials. An alligator strap with vegetable tanning lasts 3-5 years with daily wear; shell cordovan can exceed 5-7 years. Regenerated calf tends to wear faster (2-3 years), whilst technical rubber can last 5-8 years. Rotating between multiple straps significantly extends the life of each.