IWC · Portugieser
Strap for Portugieser Tourbillon Rétrograde Chronograph Armor Gold / Blue / Boutique Edition
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 diameter44 mm
ReferenceIW3940-05 (aka: IW394005)
FamilyPortugieser
MovementIWC caliber 89900
Hours, Minutes, Small Seconds | Chronograph, Flyback, Column wheel | Tourbillon Escapement
CaseArmor Gold
The Portugieser IW3940-05 (aka: IW394005), seen from the bench
The Portugieser IW394005 features the IWC 89900 caliber with flyback chronograph function, column wheel and tourbillon escapement. The movement offers hour, minute, small seconds and chronograph with instant return-to-zero mechanism. The case presents the distinctive Portugieser collection design with classic proportions.
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