IWC · Portugieser

Strap for Portugieser Constant-Force Tourbillon Double Moon Platinum / Ardoise

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
Lug width20 mm
Case diameter46 mm
ReferenceIW5901-02 (aka: IW590102)
FamilyPortugieser
MovementIWC caliber 94800 Minutes, Hours, Small Seconds | Moonphase | Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
CasePlatinum

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Portugieser IW5901-02 (aka: IW590102)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portugieser IW5901-02 (aka: IW590102), seen from the bench

The Portugieser IW5901-02 is a 46mm platinum case watch representing IWC Schaffhausen's watchmaking philosophy since 1939. The case houses the IWC 94800 caliber, a manufacture movement featuring constant-force mechanism, tourbillon escapement, and moon-phase complication. The 20mm lug width accommodates the substantial case diameter and platinum construction, while the deep blue dial and Arabic numerals reflect pure engineering design.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only