IWC · Portofino
Strap for Portofino Automatic 37 Stainless Steel / Diamond / Blue
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
ReferenceIW4581-11 (aka: 4581-11, IW458111)
FamilyPortofino
MovementIWC caliber 35111
Hours, Minutes, Seconds | Date
CaseStainless Steel
The Portofino IW4581-11 (aka: 4581-11, IW458111), seen from the bench
The Portofino represents IWC's dress watch line, characterized by a classic design and essential functions. It is equipped with the automatic caliber 35111 with indication of hours, minutes, seconds and date. The IW458111 reference maintains the elegant 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