IWC · Portugieser

Strap for Portuguese Chrono-Rattrapante White 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

20 mm straps All IWC

Lug width20 mm

Case diameter41 mm

ReferenceIW3712-09 (aka: IW371209)

FamilyPortugieser

MovementIWC caliber 76240 hours, minutes | Chronograph, Rattrapante

Year2005 - 2005

CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Portugieser IW3712-09 (aka: IW371209)

Selected for the 20 mm lug width · workshop selection

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The Portugieser IW3712-09 (aka: IW371209), seen from the bench

The Portugieser IW371209 is a white gold chronograph with 40.90mm case diameter and 20mm lug width, representing the contemporary evolution of IWC's 1939 navigator's chronograph. Powered by the IWC 76240 manufacture movement featuring chronograph and rattrapante functions, the watch combines German precision engineering with Swiss execution. The 18-carat white gold case with sober dial and applied indices ensures neutral aesthetics and exceptional versatility for a 40mm chronograph.

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