IWC · Portugieser
Strap for Portugieser Chronograph Classic Red Gold / 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 diameter42 mm
ReferenceIW3903-01 (aka: IW390301)
FamilyPortugieser
MovementIWC caliber 89361
Hours, Minutes, Small Seconds | Date | Chronograph, Flyback
CaseRed Gold
The Portugieser IW3903-01 (aka: IW390301), seen from the bench
The Portugieser IW390301 features the IWC 89361 automatic caliber with flyback chronograph function and small seconds. The movement offers hour, minute, date and chronograph indications with a flyback mechanism for instant reset. The case displays the characteristic design of the Portugieser collection with a clean dial and well-defined chronograph counters.
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