IWC · Portugieser
Strap for Portuguese Hand-Wound Eight Days Stainless Steel / Black
The Portuguese Hand-Wound Eight Days Stainless Steel / Black 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 diameter43 mm
ReferenceIW5102-02 (aka: 5102-02, IW510202)
FamilyPortugieser
MovementIWC caliber 59215 hours, minutes, small seconds | power reserve indicator
Year2014
CaseStainless Steel
Straps for the Portugieser IW5102-02
Selected for the 18 mm lug width
Black Saffiano Strap Ecru Stitching€90
Vintage Brown Calfskin Strap — Natural Patina€98
Swift Topo Leather Strap€120
Hammered Pink Strap with Ecru Stitching€98
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Hammered Calfskin Strap Light Blue€98
The Portugieser IW5102-02, seen from the bench
The IWC Portugieser IW5102-02 is a 43mm stainless steel watch that evolved from a 1939 navigation instrument for Portuguese sailors. It features the IWC 59215 automatic movement with manual winding, power reserve indicator, hours, minutes, and small seconds. The 18mm lug width allows versatile strap compatibility while maintaining optimal proportions with the 43mm case, combining functional design with mechanical precision.
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
Bespoke straps for IWC, in the atelier or by video call: casatimilano.com