IWC · Portugieser

Strap for Portuguese Automatic Red Gold / Boutique

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
Lug width22 mm
Case diameter42 mm
ReferenceIW5001-21 (aka: IW500121)
FamilyPortugieser
MovementIWC caliber 51011 hours, minutes, small seconds | date | power reserve indicator
Year2011 - 2011
CaseRed 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 Portugieser IW5001-21 (aka: IW500121)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Portugieser IW5001-21 (aka: IW500121), seen from the bench

The Portugieser IW500121 features the IWC caliber 51011 with power reserve indicator and small seconds. The watch offers hours, minutes, off-center seconds and date functions. The lugs measure 22mm in width.

Frequently asked questions

What is the lug width of the IWC Portugieser IW5001-21?

The lug width of the IWC Portugieser IW5001-21 is 22mm. This standard represents one of the most versatile dimensions in the mid-luxury segment and allows for generous strap profiles whilst maintaining harmonious proportions with the 42.30mm case. Measurement is performed by positioning a ruler between the lateral lugs of the case.

Which strap is most recommended for the Portugieser IW5001-21?

For the rose gold Portugieser, the ideal strap depends on intended use and aesthetic preference. Alligator in warm tones (cognac, tortoise grey) offers maximum elegance, whilst vegetable-tanned calf leather ensures versatility and noble ageing. Shell cordovan represents the solution for those seeking a strap that develops patina over time. Colour selection should harmonise with the metallic tone of the case: brown and hazelnut shades amplify the warmth of rose gold.

How do you change the strap on an IWC Portugieser?

Strap replacement requires the use of a spring bar removal tool. Position the watch on a soft surface, insert the tool tip into the lateral spaces of the spring bar, apply gentle downward pressure to release it, then extract the old strap. Proceed with insertion of the new strap, ensuring the spring bar clicks correctly into position. For luxury watches, it is advisable to have the operation performed by a professional watchmaker.

Are aftermarket straps compatible with the Portugieser IW5001-21?

Yes, all straps with a 22mm lug width are compatible with the Portugieser IW5001-21. High-quality aftermarket straps, crafted from alligator, vegetable-tanned calf or shell cordovan, represent a valid alternative to original IWC straps, often offering greater customisation options (colour, stitching, deployante buckle type). Compatibility is guaranteed by the standardisation of lug width.

How long does a natural leather strap last on a wristwatch?

The lifespan of a natural leather strap varies from 3 to 8 years depending on frequency of use, tanning method and care applied. Vegetable-tanned calf subjected to regular maintenance (cleaning with a damp cloth, annual conditioning with specific creams) can remain functional beyond 8 years. Alligator, due to the natural structure of the hide, tends to be more durable. Factors such as sun exposure, humidity and contact with salt water accelerate ageing. Storing the strap in a dry environment, protected from direct light, significantly extends its useful life.

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