IWC · Portofino

Strap for Portofino Automatic White Gold / Ardoise

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
Lug width20 mm
Case diameter39 mm
ReferenceIW3563-01 (aka: IW356301)
FamilyPortofino
MovementIWC caliber 30110 hours, minutes, seconds | date
Year2007 - 2010
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Portofino IW3563-01 (aka: IW356301)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portofino IW3563-01 (aka: IW356301), seen from the bench

The Portofino represents IWC's dress watch line with essential design and functions of hours, minutes, seconds and date. It is equipped with the IWC in-house automatic caliber 30110. Standard 20mm lugs for interchangeable straps.

Frequently asked questions

What is the lug width of the IWC Portofino IW3563-01?

The lug width of the Portofino IW3563-01 is 20 millimeters. This dimension is standard for watches with a 39 mm case diameter and can be easily measured by positioning a digital caliper between the attachment holes on the case. Always verify the measurement before purchasing an aftermarket strap to ensure mechanical compatibility.

Which strap material is best suited to the Portofino IW3563-01 in white gold?

For the Portofino in 18K white gold, alligator is the ideal choice: its natural texture balances the brightness of the metal and develops a noble patina over time. Valid alternatives include shell cordovan (for formal occasions), vegetable-tanned leather (for those who appreciate visible aging) and calf leather for a more cohesive look. NATO straps or rubber are perfect for casual summer wear.

How do you change the strap on the IWC Portofino IW3563-01?

The Portofino strap is changed via the spring bar. You will need to use a case opener tool or a dedicated strap-changing tool to extract the spring bar from the case lugs, freeing the old strap. Next, insert the new 20 mm strap into the holes and reinsert the spring bar. The operation requires care to avoid scratching the white gold case. If inexperienced, it is advisable to consult a certified watchmaker.

Is a 20 mm aftermarket strap 100% compatible with the Portofino IW3563-01?

Yes, any strap with a certified lug width of 20 mm is compatible with the Portofino IW3563-01. Compatibility concerns exclusively the width of the attachment. However, build quality, finishing and durability vary significantly between manufacturers. Custom-made artisanal straps guarantee greater longevity and superior construction details compared to mass-produced solutions.

How long does a leather strap last on a watch like the Portofino?

Durability depends on the material, tanning method and usage. A quality alligator leather with vegetable tanning typically lasts 3-5 years with regular wear, while shell cordovan can last 5-7 years. Exposure to sweat, water and sunlight accelerates aging. To maximize longevity, it is advisable to alternate multiple straps and store them in dry environments. Straps handcrafted with premium leathers generally guarantee greater durability compared to industrial solutions.

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