IWC · Portugieser
Strap for Portuguese Chronograph Classic 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
ReferenceIW3904-03 (aka: 3904-03, IW390403)
FamilyPortugieser
MovementIWC caliber 89361 hours, minutes, small seconds | date | Chronograph, Flyback
Year2013
CaseStainless Steel
Straps for the Portugieser IW3904-03 (aka: 3904-03, IW390403)
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
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Portugieser IW3904-03 (aka: 3904-03, IW390403), seen from the bench
The Portugieser IW3904-03 is equipped with the IWC 89361 caliber featuring flyback chronograph and small seconds functions. The movement offers indication of hours, minutes, date, and chronograph with instant reset capability. The watch features the classic Portugieser configuration with a clean dial and optimal legibility.
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