IWC · Portofino
Strap for Portofino Automatic Moon Phase 37 Stainless Steel / Silver
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 diameter37 mm
ReferenceIW4590-13 (aka: IW459013)
FamilyPortofino
MovementIWC caliber 35800 hours, minutes, seconds | moonphase
Year2021
CaseStainless Steel
Straps for the Portofino IW4590-13 (aka: IW459013)
Selected for the 18 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Portofino IW4590-13 (aka: IW459013), seen from the bench
The IWC Portofino IW459013 is a 37mm stainless steel automatic watch with moon phase complication, representing a contemporary interpretation of an 1980s icon. It features the caliber 35800 movement with hours, minutes, seconds, and lunar display. The polished stainless steel case incorporates refined lug geometry and is paired with an 18mm lug width, designed for versatile wrist compatibility.
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