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IWC · GST Aquatimer

Strap for IWC GST Aquatimer IW3795-05

The Aquatimer Chronograph Edition La Cumbre Volcano takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
22 mm strapsAll IWC
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Lug width22 mm
Case diameter44 mm
ReferenceIW3795-05 (aka: 3795-05, IW379505)
FamilyGST Aquatimer
MovementIWC caliber 89365 Hours, Minutes, Small seconds | Date | Chronograph, Flyback
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the GST Aquatimer IW3795-05

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

What I'm asked about the IWC GST Aquatimer IW3795-05

What strap size does the IWC GST Aquatimer IW3795-05 take?

The IWC GST Aquatimer IW3795-05 needs 22 mm between the lugs, usually 18 or 20 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the IWC GST Aquatimer IW3795-05 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the IWC GST Aquatimer IW3795-05?

Yes, in 22 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 44 mm diver I go for a full-thickness strap, not a thin one.

Which strap do you recommend for the IWC GST Aquatimer IW3795-05?

Rubber if you wear it in the water; otherwise a 22 mm calf strap, full thickness. You'll find it ready in the 22 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

The GST Aquatimer IW3795-05, seen from the bench

The GST Aquatimer reference IW3795-05 is equipped with the IWC calibre 89365 with hours, minutes, small seconds, date and flyback chronograph functions. The watch features specific complications for underwater use integrated into the automatic manufacture movement. The flyback function allows instant reset and restart of the chronograph with a single push of the button.

Frequently asked questions

Which strap is best suited for the IWC GST Aquatimer IW3795-05?

For the GST Aquatimer IW3795-05, we recommend premium alligator for a formal approach, calf leather for everyday versatility, or FKM rubber if you use the watch in a marine environment. The choice depends on your primary use and dial variant (black or blue). A dark brown alligator strap on a black dial offers elegance while maintaining the technical character of the instrument.

Are there aftermarket straps compatible with the IWC GST Aquatimer IW3795-05?

Yes, certified quality aftermarket straps compatible with the 22mm lugs of the IW3795-05 are available. Milano Straps offers a collection of handcrafted 22mm straps in alligator, calf leather, NATO, and rubber, all customizable in size and details. The Casati Milano atelier also creates custom bespoke straps with direct aesthetic consultation.

How long does a leather strap last on the IWC GST Aquatimer IW3795-05?

The lifespan of a leather strap depends on the material and usage. Premium alligator lasts 3-5 years with moderate daily use; calf leather 2-3 years. Factors such as humidity, sun exposure, and intensity of use significantly affect longevity. Milano Straps straps benefit from an 18-month warranty and can be revitalized through leather conditioning treatments.

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

Bespoke straps for IWC, in the atelier or by video call: casatimilano.com