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IWC · Portofino

Strap for IWC Portofino IW3564-04

The Portofino Midsize 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
18 mm strapsAll IWC
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Lug width18 mm
Case diameter34 mm
ReferenceIW3564-04
FamilyPortofino
MovementIWC caliber 30110 Hours, Minutes, Seconds | Date
Year2007 - 2008
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Portofino IW3564-04

Selected for the 18 mm lug width

All 18 mm straps →

What I'm asked about the IWC Portofino IW3564-04

What strap size does the IWC Portofino IW3564-04 take?

The IWC Portofino IW3564-04 needs 18 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the IWC Portofino IW3564-04 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the IWC Portofino IW3564-04?

Yes, in 18 mm leather. On a 34 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the IWC Portofino IW3564-04?

A thin 18 mm alligator. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

The Portofino IW3564-04, seen from the bench

The Portofino represents IWC's line of elegant watches characterized by a classic and understated design. It is equipped with the automatic IWC 30110 calibre with hour, minute, second and date indication. The IW3564-04 reference maintains the traditional proportions of the collection with a clean and essential dial.

Frequently asked questions

What is the best strap for the IWC Portofino IW3564-04?

For the Portofino we recommend mississippi alligator or full-grain calf leather. Alligator offers a geometric texture ideal in formal settings, with well-defined scales that age gracefully. Calf leather provides a softer and more organic grain, perfect for daily wear. Both materials develop a natural patina that reflects the owner's personal style, enhancing aesthetic value over time.

Which 18mm straps are compatible with the IWC Portofino IW3564-04?

All straps with 18mm attachment are compatible with the Portofino IW3564-04, provided the total length is suitable for your wrist. On Milano Straps you will find a curated selection of straps in alligator, calf and natural materials, all customizable in length, initials and stitching thread. The Casati Milano atelier also offers bespoke custom creation with personal consultation via WhatsApp.

How long does a leather strap last on a watch?

A quality leather strap (alligator or full-grain calf) lasts on average 3-5 years of regular use, depending on personal wear and climatic conditions. The strap develops a natural patina that increases its aesthetic value over time. Milano Straps guarantees 18 months on invoice, while a bespoke strap from Casati Milano benefits from the same warranty, with the possibility of restoration and periodic maintenance to further extend its lifespan.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only

Bespoke straps for IWC, in the atelier or by video call: casatimilano.com