IWC · Portugieser

Strap for Portugieser Regulateur White Gold

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 diameter43 mm
ReferenceIW5444-04 (aka: 5444-04, IW544404)
FamilyPortugieser
MovementIWC caliber 98245 Hours, Minutes, Small Seconds
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 Portugieser IW5444-04 (aka: 5444-04, IW544404)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Portugieser IW5444-04 (aka: 5444-04, IW544404), seen from the bench

The Portugieser IW5444-04 is the contemporary evolution of an icon created in 1939 for Portuguese merchant fleet navigators. The watch features a 43.10 mm white gold case paired with IWC's in-house caliber 98245 automatic movement, displaying hours, minutes, and small seconds. The clean dial without date, accessible through a sapphire caseback, emphasizes the movement's elegance. The 22 mm lug width requires careful strap selection to ensure proper mechanical fit and aesthetic harmony with the case proportions.

Frequently asked questions

What is the lug width of the IWC Portugieser IW5444-04?

The lug width of the IWC Portugieser IW5444-04 is 22 mm. This measurement is the primary parameter to verify when selecting a compatible strap. You can check it by directly measuring the lug hole with a digital calliper or by consulting the technical documentation provided by IWC.

Which type of strap is most suitable for the white gold Portugieser?

For the Portugieser IW5444-04 in white gold, premium alligator is the classical choice as its natural grain exalts the sober aesthetics of aged white gold. Shell cordovan offers density and lustre evolving over time, whilst vegetable-tanned leather provides a more contemporary alternative. NATO straps in neutral tones function excellently for a sportier presentation.

How do you change the strap on an IWC watch?

To change the strap, remove the watch from your wrist. Use a dedicated tool (sprung bar tool) or a toothpick to release the spring bars securing the old strap. Once the lugs are free, extract the previous strap and insert the new one by aligning it correctly in the lug holes. If you feel uncertain, entrust the operation to a professional watchmaker to avoid damage to the case.

Is an aftermarket strap compatible with the IWC Portugieser IW5444-04?

Yes, any strap with a lug width of 22 mm is mechanically compatible with the IW5444-04. However, aesthetic compatibility depends on construction quality: a strap in premium leather such as alligator or shell cordovan ensures visual and tactile coherence with the watch's artisanal standard. Low-quality straps betray the Portugieser's character despite correct mechanical fitting.

What is the average lifespan of a leather strap for the Portugieser?

A premium-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts between 5 and 10 years with regular daily use and rotation. Longevity depends on intensity of use, climatic conditions (humidity, heat) and maintenance. Exposing the strap to prolonged direct sunlight or highly humid environments accelerates natural ageing. The patina that forms over time is desirable and characteristic; unlike structural fracture, it represents the aesthetic evolution of the leather.

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