IWC · Portugieser
Strap for Portugieser Jubilee Rose 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 diameter42 mm
ReferenceIW5441-03 (aka: IW544103)
FamilyPortugieser
MovementIWC caliber 9828
Hours, Minutes, Small Seconds
CaseRose Gold
The Portugieser IW5441-03 (aka: IW544103), seen from the bench
The Portugieser IW5441-03 in rose gold, 42mm case diameter with 18mm lug width, represents the contemporary evolution of an iconic IWC chronograph created in 1939. The IWC caliber 9828 manual movement provides 42 hours of power reserve at 4Hz frequency, displaying hours-minutes-seconds in 6-12-9 configuration. The rose gold case features a minimalist porcelain-white dial with applied rose gold indices, maintaining the Bauhaus-inspired geometric proportions and visual balance that define the Portugieser family.
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