IWC · GST Aquatimer

Strap for Aquatimer Chronograph Stainless Steel / Blue / Bracelet

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 diameter44 mm
ReferenceIW3767-10 (aka: 3767-10, IW376710)
FamilyGST Aquatimer
MovementIWC caliber 79320 hours, minutes, small seconds | date, day | Chronograph
Year2011 - 2014
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the GST Aquatimer IW3767-10 (aka: 3767-10, IW376710)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The GST Aquatimer IW3767-10 (aka: 3767-10, IW376710), seen from the bench

The IWC GST Aquatimer IW3767-10 is a 44mm stainless steel professional diving chronograph from the 1990s featuring the caliber 79320 in-house movement. Equipped with a rotating SafeDive bezel, sapphire crystal, and water resistance to 300 meters, this tool watch combines hours, minutes, small seconds, date, day, and chronograph functions with COSC-certified precision. The 22mm lug width is proportioned to the case diameter and structural details, ensuring proper visual balance when fitted with a strap.

Frequently asked questions

What is the lug width of the IWC GST Aquatimer IW3767-10?

The IWC GST Aquatimer IW3767-10 has a lug width of 22mm. This measurement is specific to the model and corresponds to the distance between the inner lugs. To verify compatibility of a strap, always measure perpendicularly between the two attachment points on the case using a digital calliper.

Which strap is most recommended for the GST Aquatimer IW3767-10?

For the GST Aquatimer IW3767-10, we recommend natural alligator leather with vegetable tanning for an elegant pairing, or robust NATO straps in cotton for a sporty look. Chromium-tanned calf leather offers an excellent compromise between durability and value. The choice depends on intended use: diving requires moisture-resistant materials, whilst formal occasions favour alligator.

How do you change a strap on an IWC watch?

Changing the strap requires a spring bar removal tool. Gently position the flat end of the tool beneath the lug's spring bar pin, apply light pressure to compress the internal spring, then remove the lug from its seat. Repeat for both sides. Insert the new strap by aligning the lugs to the holes and ensure the spring bar pin clicks completely into position.

Are standard 22mm compatible straps suitable for the IW3767-10?

Yes, any 22mm lug width strap is compatible with the IWC GST Aquatimer IW3767-10, provided the total length suits your wrist. We recommend choosing straps manufactured by experienced craftsmen who guarantee construction precision and quality finishing.

How long does a leather strap last on an GST Aquatimer subjected to diving?

The lifespan of a leather strap depends on the frequency of underwater use and post-dive care. A quality vegetable-tanned strap, used occasionally for diving, typically lasts 2-3 years if thoroughly dried after each immersion. For intensive use or frequent diving, we recommend rubber or NATO fabric straps, which are more resistant to prolonged saltwater exposure.

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