IWC · Portofino
Strap for Portofino Chronograph Stainless Steel / Silver
Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
19mm
Lug width19 mm
Case diameter42 mm
ReferenceIW3910-07 (aka: 3910-07, IW391007)
FamilyPortofino
MovementIWC caliber 75320 hours, minutes, small seconds | date, day | Chronograph
Year2012 - 2019
CaseStainless Steel
Straps for the Portofino IW3910-07 (aka: 3910-07, IW391007)
Selected for the 19 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 IW3910-07 (aka: 3910-07, IW391007), seen from the bench
The Portofino IW391007 is powered by the IWC 75320 caliber with hour, minute, small seconds, date, day and chronograph functions. The watch features a classic configuration with comprehensive time indications and chronograph complication. The movement offers a traditional layout of the registers and day of the week display.
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