IWC · Portugieser
Strap for Portugieser Chrono-Rattrapante Rose 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 diameter41 mm
ReferenceIW3712-03 (aka: 3712-03, IW371203)
FamilyPortugieser
MovementIWC caliber 76240
Hours, Minutes | Chronograph, Rattrapante
CaseRose Gold
The Portugieser IW3712-03 (aka: 3712-03, IW371203), seen from the bench
The IWC Portugieser IW3712-03 is a rose gold chronograph-rattrapante watch with a 40.9mm case diameter and 18mm lug width, representing the contemporary evolution of a 1939 design. It features the IWC caliber 76240, a manual-wind movement with chronograph and rattrapante functions. The rose gold case, clean dial with applied indices, and refined mechanics embody Swiss precision and aesthetic warmth.
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