IWC · Portugieser

Strap for Portuguese 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
ReferenceIW3714-44 (aka: IW371444)
FamilyPortugieser
MovementIWC caliber 79350 Hours, Minutes | Chronograph
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 IW3714-44 (aka: IW371444)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Portugieser IW3714-44 (aka: IW371444), seen from the bench

The IWC Portugieser IW3714-44 is a 40.90mm rose gold chronograph from the iconic Portuguese navigator watch family established in 1939. Powered by the manual-wind IWC 79350 caliber, it features a blue lacquered dial and black applications with a 20mm lug width. The 18-carat rose gold case is 13.5mm thick with sapphire crystal and 60 meters water resistance, combining classical proportions with modern technical standards.

Frequently asked questions

What is the lug width of the IWC Portugieser IW3714-44?

The lug width of the IWC Portugieser IW3714-44 is 20mm. This measurement represents the distance between the two lugs of the case and is essential for selecting a compatible strap. Always verify this dimension before purchase, as tolerances of ±1mm could compromise optimal fit.

Which strap is ideal for the IWC Portugieser IW3714-44?

For the Portugieser IW3714-44 in rose gold, an alligator strap with vegetable tanning represents the most coherent choice with the model's formal language. The recommended colour is tobacco or cognac brown, which enhances the warm patina of the rose gold. High-quality alternatives include shell cordovan and vegetable-tanned calf leather in dark tones.

How do you change the strap on the IWC Portugieser IW3714-44?

The strap is changed using a spring bar tool to remove the pins that attach the strap to the case lugs. Gently insert the tool into the lateral slot of each pin, lift slightly to release the spring, then slide away the old strap. Mount the new strap by reinserting the pins into the lugs and verify that the spring is correctly positioned.

Is an aftermarket strap compatible with the IWC Portugieser IW3714-44?

Yes, any strap with a 20mm lug width is compatible with the IW3714-44. Premium bespoke straps, such as those produced by Casati Milano, offer superior construction precision and leather selection compared to OEM straps, while maintaining full mechanical compatibility.

How long does a leather strap last on the IWC Portugieser IW3714-44?

A premium leather strap with vegetable tanning has an average lifespan of 3-5 years with daily use, provided proper maintenance (avoid prolonged water exposure, store in a dry environment). Shell cordovan tends to last longer, up to 7-10 years, thanks to the material's natural density. Durability depends on climate, frequency of use, and personal care.

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