IWC · Portugieser
Strap for Portuguese Yacht Club Chronograph Red Gold
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 diameter46 mm
ReferenceIW3902-09 (aka: 3902-09, IW390209)
FamilyPortugieser
MovementIWC caliber 89361 hours, minutes, small seconds | date | Chronograph, Flyback
Year2011 - 2015
CaseRed Gold
Straps for the Portugieser IW3902-09 (aka: 3902-09, IW390209)
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 Portugieser IW3902-09 (aka: 3902-09, IW390209), seen from the bench
The IWC Portugieser IW3902-09 is a red gold chronograph with a 45.50mm case diameter, featuring the IWC 89361 automatic movement. The model showcases sculptural Arabic numerals, elegant hands, and a flyback chronograph function that reflects classical watchmaking reimagined with modern aesthetics. The 18mm lug width accommodates straps designed for this iconic timepiece, blending oceanic heritage with contemporary proportions.
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