IWC · Portugieser

Strap for Portuguese Chrono-Rattrapante Stainless Steel / Blue / Boutique Milano

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

ReferenceIW3712-22 (aka: IW317122)

FamilyPortugieser

MovementIWC caliber 76240 hours, minutes | Chronograph, Rattrapante

Year2019

CaseStainless Steel

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 IW3712-22 (aka: IW317122)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portugieser IW3712-22 (aka: IW317122), seen from the bench

The IWC Portugieser IW3712-22 is a modern evolution of a 1939 maritime navigation instrument, featuring a 40.90mm stainless steel case and chronograph movement. The watch combines dressy proportions with exceptional readability through its white dial and applied baton indices. At its heart beats the IWC 76240 calibre, a manufacture movement with hours, minutes, chronograph and split-seconds function displayed across three perfectly organized subdials. The 20mm lug width is a critical specification for aftermarket strap compatibility.

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