IWC · Portofino
Strap for Portofino Hand-Wound Eight Days Moonphase 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 diameter45 mm
ReferenceIW5164-01 (aka: IW516401)
FamilyPortofino
MovementIWC caliber 59800 hours, minutes, small seconds | date | moonphase | power reserve indicator
Year2017
CaseStainless Steel
Straps for the Portofino IW5164-01 (aka: IW516401)
Selected for the 18 mm lug width
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
Hammered calfskin strap in cuoio€98
The Portofino IW5164-01 (aka: IW516401), seen from the bench
The IWC Portofino IW5164-01 is a 45mm stainless steel watch representing the contemporary evolution of an icon born in 1984. It features the caliber 59800 movement with refined complications including power reserve indicator, moonphase, and date display. The case diameter is 45mm with an 18mm lug width, crafted in 316L stainless steel for superior corrosion resistance. The movement beats at 28,800 vibrations per hour and offers a 7-day power reserve, combining Mediterranean elegance with Swiss Schaffhausen manufacturing rigor.
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