IWC · Portugieser

Strap for Portugieser Constant-Force Tourbillon Double Moon Red Gold / Silver

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
ReferenceIW5901-08 (aka: IW590108)
FamilyPortugieser
MovementIWC caliber 94800 Minutes, Hours, Small Seconds | Moonphase | Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
CaseRed Gold

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 IW5901-08 (aka: IW590108)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portugieser IW5901-08 (aka: IW590108), seen from the bench

The Portugieser IW590108 represents a high complication timepiece from the Swiss manufacture IWC. It is equipped with the in-house Caliber 94800 featuring a constant-force mechanism, tourbillon escapement and power reserve indicator. The functions include hours, minutes, small seconds and moon phases.

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