IWC · Portugieser
Strap for Portugieser Tourbillon Rétrograde Chronograph Armor Gold / Black
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 diameter44 mm
ReferenceIW3940-09 (aka: IW394009)
FamilyPortugieser
MovementIWC caliber 89900
Hours, Minutes, Small Seconds | Chronograph, Flyback, Column wheel | Tourbillon Escapement
CaseArmor Gold
Straps for the Portugieser IW3940-09 (aka: IW394009)
Selected for the 20 mm lug width · workshop selection
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
Novonappa Black Strap — IWC Pilot Style€149
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
The Portugieser IW3940-09 (aka: IW394009), seen from the bench
The Portugieser IW394009 features the IWC caliber 89900 with flyback chronograph functions, column wheel, and tourbillon escapement. The watch has hour, minute, small seconds, and chronograph with flyback mechanism indications. The movement incorporates the tourbillon complication visible on the dial.
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