IWC · Portofino
Strap for Portofino Automatic 37 Stainless Steel / Diamond / Silver
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
18mm
Lug width18 mm
Case diameter37 mm
ReferenceIW4581-09 (aka: 4581-09, IW458109)
FamilyPortofino
MovementIWC caliber 35111 hours, minutes, seconds | date
CaseStainless Steel
Straps for the Portofino IW4581-09 (aka: 4581-09, IW458109)
Selected for the 18 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Hammered calfskin strap in cuoio€98
Saffiano Red Strap Ecru Stitching€90
The Portofino IW4581-09 (aka: 4581-09, IW458109), seen from the bench
The Portofino represents IWC's line of elegant watches characterized by a minimalist design. It is equipped with the IWC 35111 caliber with hour, minute, second and date indication. The IW4581-09 reference maintains the classic proportions typical of the collection.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only