IWC · Portugieser

Strap for Portuguese Automatic Stainless Steel / Taiwan

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
ReferenceIW5001-19
FamilyPortugieser
MovementIWC caliber 51011 hours, minutes, small seconds | date | power reserve indicator
Year2009 - 2009
CaseStainless Steel

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 IW5001-19

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Portugieser IW5001-19, seen from the bench

The Portugieser Automatic IW5001-19 is a stainless steel watch with a 42.30 mm case diameter and 22 mm lug width. It features the IWC caliber 51011 automatic movement beating at 28,800 alternations per second, a white dial with applied indices, Breguet hands, and a power reserve indicator. The model combines professional navigation watch heritage with functional design principles established in the 1930s through IWC Schaffhausen's collaboration with Portuguese navigators.

Frequently asked questions

What is the lug width of the IWC Portugieser IW5001-19?

The lug width of the IW5001-19 is 22 millimetres. This dimension is standard for watches with cases between 41 and 43 millimetres in diameter and ensures harmonious wrist proportions without excessive width. To verify correct measurement, use a digital calliper positioned inside the lugs, excluding the outer flange.

Which strap is recommended for the Portugieser IW5001-19?

For the IW5001-19, noble leathers with vegetable tanning are recommended, such as alligator or calf, in shades such as honey, tobacco or black. Alligator represents the supreme formal solution thanks to its natural geometric grain. For a more sporting aesthetic, shell cordovan offers a robust texture that ages magnificently. Vulcanised rubber remains the pragmatic choice for aquatic environments.

How do you change the strap on the Portugieser IW5001-19?

The strap is changed by removing the spring bars that fix the ends to the case lugs. Use a dedicated tool (strap remover or precision torch) to depress the bar from the inside and extract it gently. Position the new strap on the lugs, realign the holes and reinsert the bar until the locking click. Verify that the strap is fully secured before use.

Are there aftermarket straps compatible with the IW5001-19?

Yes, numerous aftermarket leather and fabric straps are compatible with the 22-millimetre lug width. The best suppliers offer leathers with certified vegetable tanning, artisanal finishes and stainless steel spring bars. It is important to verify that the strap uses steel bars rather than deformable materials, and that the eyelet dimensions coincide exactly with those of the Portugieser.

How long does a leather strap last on a watch like the Portugieser IW5001-19?

A high-quality leather strap made with vegetable tanning has a typical lifespan of 3-5 years with moderate daily use. Longevity depends on exposure to moisture, frequency of water contact and maintenance. Vegetable-tanned straps develop a noble patina over the years, enhancing aesthetic appearance. Periodic maintenance with specific leather creams significantly extends the strap's service 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