Wyler Vetta · Jumbostar

Strap for Wyler Vetta Jumbostar WV0409

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceWV0409
FamilyJumbostar
MovementMovimento automatico calibro ETA 2894 Riserva di carica: 42h Frequenza: 28800 A/h (4 Hz) Istruzioni 42h Frequenza: 28800 A/h (4 Hz) Istruzioni d'uso Avvia i 28800 A/h (4 Hz) Istruzioni d'uso Avvia il download {"im
Case40mm Lug to lug: 48mm Distanza tra le anse: 20mm Spessore ca
Crystalzaffiro bombato antiriflesso Rehaut girevole con rotazione unidirezionale a scat
Water resistance10 ATM Cinturino in pelle brown con sgancio rapido Made in I

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Jumbostar WV0409

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Jumbostar WV0409, seen from the bench

The Wyler Vetta Jumbostar WV0409 is an iconic Swiss sports watch from the 1960s with a 40 mm diameter stainless steel case and squared shape with soft edges. It features a slightly domed dial and a lug-to-lug distance of 48 mm for balanced wrist wear. The watch is powered by an ETA 2894 automatic caliber operating at 28,800 bph with a 42-hour power reserve. The strap width is 20 mm, the standard size for this model, measured precisely between the lugs.

Frequently asked questions

What is the lug width of the Wyler Vetta Jumbostar WV0409?

The lug width of the WV0409 is 20 millimetres. This measurement corresponds to the distance between the two attachment points of the case (lugs). When ordering a strap, ensure that the inner part measures exactly 20 millimetres to guarantee a perfect fit without play or excessive tension.

Which strap is most suitable for the Jumbostar WV0409?

The ideal strap depends on your intended use. For formal occasions, we recommend alligator leather or vegetable-tanned calf; for sports, a robust canvas NATO; for water use, an FKM rubber strap. In all cases, the lug width must be strictly 20mm, and the material should be of premium quality to honour the Swiss precision of your timepiece.

How do I change the strap on the Wyler Vetta Jumbostar WV0409?

Strap replacement requires a specific tool (spring bar tool) or delicate tweezers. Insert the tool beneath the lug to compress the internal spring, then remove the worn strap. Position the new strap (always 20mm) in the attachment points, verifying that the spring clicks securely on both sides. If you are not experienced, entrust a professional watchmaker to avoid damage to the case.

Can I use an aftermarket compatible strap on the WV0409?

Yes, provided the aftermarket strap is specifically designed for a 20mm lug width and manufactured by reputable artisans. Many international and Italian producers (such as strap specialists) offer straps of superior quality compared to OEM products. Always verify exact dimensions before ordering and choose materials that respect the qualitative standards of your Swiss timepiece.

How long does a leather strap last on a watch like the WV0409?

A premium leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years of daily wear. Longevity depends on care: clean with a soft dry cloth, avoid prolonged water immersion, and protect from direct heat sources. Vegetable-tanned straps develop a richer patina over time, ageing elegantly. When the leather shows signs of wear, consider replacement to maintain the aesthetic value of your Jumbostar.

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