Strap for Portugieser Automatic 40 Rose Gold / Black

The IWC Portugieser IW3584-01 features a 20mm lug width. This is the distance between the case lugs where the strap is inserted. You can verify this measurement by examining the original strap or measuring directly on the case.

The ideal strap depends on usage and personal preferences. For formal occasions, alligator represents the classic choice thanks to its regular texture and chromatic compatibility with rose gold. For daily wear, vegetable-tanned calf leather offers a patina that evolves over time. For greater versatility, shell cordovan combines elegance with superior wear resistance.

The strap is changed using a dedicated tool called a spring bar tool or extractor pen. Position the tip in the groove of the lug, apply gentle pressure to compress the internal spring, then slide the pin out of the case. Repeat on the other side. To insert the new strap, align the holes and slide the pins until they click into place.

All artisanal straps with a 20mm lug width are compatible with the Portugieser IW3584-01. On milanostraps.it you will find a selection of straps ready for shipment in alligator, calf leather, shell cordovan and other materials, customizable in sizes, initials and stitching thread. Atelier Casati Milano also offers the possibility of creating bespoke straps with personal choice of leathers.

The lifespan of a leather strap depends on the quality of the material, frequency of use, and storage conditions. An artisanal strap made with vegetable-tanned leather can last 5-8 years with daily use, while alligator and shell cordovan offer greater longevity, up to 10-12 years. Casati Milano guarantees a minimum duration of 18 months on all handcrafted straps, with the possibility of revision and restoration over time.