IWC · Portugieser
Strap for Portugieser Constant-Force Tourbillon Double Moon Platinum / Green
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
ReferenceIW5901-10 (aka: IW590110)
FamilyPortugieser
MovementIWC caliber 94800 minutes, hours, small seconds | moonphase | Constant Force Mechanism, tourbillon escapement, power reserve indicator
Year2019 - 2020
CasePlatinum
Straps for the Portugieser IW5901-10 (aka: IW590110)
Selected for the 20 mm lug width · workshop selection
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Millennium Green Alligator Strap€195
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Vintage Olive Green Calf Leather Watch Strap€80
Italian Calfskin Rally Strap in Cognac€110
The Portugieser IW5901-10 (aka: IW590110), seen from the bench
The Portugieser IW5901-10 features the IWC Caliber 94800 movement with a constant-force tourbillon escapement and power reserve indicator. The movement integrates functions for hours, minutes, small seconds, and a moon phase display. The tourbillon complication is combined with a constant-force system to optimize rate accuracy.
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