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Portofino Perpetual Calendar

The Portofino Perpetual Calendar features the legendary perpetual calendar developed by Kurt Klaus during the 1980s.
ReferenceIW344601
Dial ColorSilver plated
CaseStainless steel
StrapBlue calfskin strap
Diameter40 mm
MovementAutomatic, self-winding, IWC-manufactured movement

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Complimentary standard delivery

All orders come with complimentary standard delivery. Watches or accessories will be shipped to your home or professional address within 3 to 5 business days. Alternatively, you can select to have your order available for pick-up at a boutique.

Personalization options

You can choose from various personalization options. For select models, we offer engraving services to add a specific date or name on the case back. Additionally, you can purchase different straps or bracelets to match your timepiece to your style.

Watch expert personal shopping

For orders placed by telephone, our concierge shopping service is available to help you find the perfect watch. A watch expert will guide you through our collections and answer any questions you may have about different models and complications.

Virtual watch try-on

You can try on our watches virtually before placing your order. The IWC App, available for download in all major app stores, features a try-on function using augmented reality. Point your smartphone camera at your wrist to see how a watch looks on you.


Portofino Perpetual Calendar
Portugieser Perpetual Calendar 42
40 mm - Silver plated18 ct 5N goldIW344602
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42.4 mm - Silver platedStainless steelIW344203
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