IWC · Portugieser

Strap for Portugieser Chrono-Automatic Rose Gold / Black / Diamond

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 diameter41 mm
ReferenceIW3714-29 (aka: IW371429)
FamilyPortugieser
MovementIWC caliber 79350 hours, minutes | Chronograph
Year2003 - 2003
CaseRose 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 IW3714-29 (aka: IW371429)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portugieser IW3714-29 (aka: IW371429), seen from the bench

The Portugieser IW371429 is powered by the IWC 79350 caliber with chronograph function in addition to hours and minutes indications. The watch features 20mm lugs and represents one of the historical collections of the Schaffhausen manufacture. The movement ensures the chronograph functions integrated into the distinctive design of the Portugieser line.

Frequently asked questions

What is the lug width of the IWC Portugieser IW3714-29?

The lug width of the IWC Portugieser IW3714-29 is 20 mm. This measurement represents the internal distance between the two lateral lugs (spring bars) of the case. It is essential to verify this dimension before ordering an aftermarket strap, as even minor variations would cause structural incompatibility with the case.

What is the best strap for the Portugieser IW3714-29 in rose gold?

For the rose gold Portugieser, we recommend natural alligator or French calf leather in vegetable tanning. Alligator offers a geometric, formal grain that amplifies the timepiece's classical identity. Vegetable-tanned calf develops a natural patina over time that harmonises beautifully with rose gold's warm tonality. Ideal colours are dark brown, cognac, or burgundy.

How do I change the strap on my IWC Portugieser?

Remove the lugs (lateral pins) from the case using a small, specialised tool or gentle hammer. Position the watch on a soft surface to prevent scratches, then extract the pin on one side, slide the old strap through, and insert the new one. Reinsert the pin carefully. If uncertain, consult a specialised service centre.

Is an aftermarket strap compatible with the IWC Portugieser IW3714-29 reliable?

Yes, provided it is sourced from specialised suppliers guaranteeing construction quality equivalent to original manufacturers. An artisanal strap in fine alligator or calf leather with precise 20 mm lug width offers structural reliability and longevity comparable to factory straps. Certified warranty (such as our 18-month guarantee) is a marker of credibility.

How long does a leather strap last on my IWC watch?

Durability depends on usage, tanning method, and leather quality. A high-quality vegetable-tanned calf strap, subjected to moderate wear, maintains structural integrity for 3–5 years. Shell cordovan, being naturally more resistant, easily reaches 5–8 years. Alligator sits between the two. Periodic maintenance (light cleaning, annual conditioning) significantly extends 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