IWC
Portofino IW5164-05 (aka: IW516405)— lug 20mm
IWC Portofino IW5164-05 (aka: IW516405): 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
IWC IW5164-05 (aka: IW516405)The essential strap measurement.
Browse 20mm straps →IW5164-05 (aka: IW516405)
IWC caliber 59800 Hours, Minutes, Small Seconds | Date | Moonphase | Power Reserve Indicator
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Portofino
FAQ
What is the exact lug width of the IWC Portofino IW5164-05?
The IWC Portofino IW5164-05 has a lug width of 20mm. This measurement should be verified by placing a digital caliper horizontally between the inner shoulders of the lugs, excluding the attachments that protrude from the case. Precise measurement ensures a strap that fits perfectly without lateral play.
What strap is recommended for the IWC Portofino IW5164-05?
For the Portofino IW5164-05, straps in toned alligator or structured calf leather are ideal, as they enhance the aesthetic restraint of the 45mm case without adding visual weight. IWC has historically recommended organic leather supports, whose natural patina develops beautifully alongside the chromatic evolution of stainless steel over time.
How do you change the strap on the IWC Portofino IW5164-05?
The strap is replaced using a spring bar tool: gently remove the elastic pins from the lugs and insert the new strap in the same manner. Atelier Casati Milano offers professional assistance via WhatsApp for those who wish to avoid the risk of damaging the case during the operation.
Which aftermarket straps are compatible with the Portofino IW5164-05?
Any strap with a 20mm lug width is compatible. Milano Straps offers a complete range of customizable artisanal straps in size, material (alligator, calf, NATO, rubber) and stitching details, ensuring stylistic consistency with the original watch.
What is the average lifespan of a leather strap for this watch?
A high-quality leather strap, such as those made by Atelier Casati Milano, typically lasts 3-5 years with regular use. Longevity depends on frequency of use, climatic conditions, and maintenance. Casati Milano provides an 18-month warranty and recommends periodic cleaning with a slightly damp cloth to preserve the natural patina.
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 →By appointment only · Milan
The atelier's website: casatimilano.com