IWC · Portugieser
Strap for Portugieser Yacht Club Chronograph Stainless Steel - Red Gold / Silver / Bracelet
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 diameter45 mm
ReferenceIW3907-03 (aka: IW390703)
FamilyPortugieser
MovementIWC caliber 89361 hours, minutes, small seconds | date | Chronograph, Flyback
Year2020
CaseRed Gold, Stainless Steel
Straps for the Portugieser IW3907-03 (aka: IW390703)
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 IW3907-03 (aka: IW390703), seen from the bench
The Portugieser IW3907-03 is a 44.60mm chronograph in red gold and stainless steel featuring the manual-wound caliber 89361 with 48-hour power reserve. It combines the Portugieser collection's sophisticated aesthetics with a flyback chronograph mechanism, offering hours, minutes, small seconds subdial, and date subdial on a fully transparent caseback. The 20mm lug width accommodates alternative straps while maintaining the watch's proportional harmony and heritage chronograph standard.
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