IWC · GST Aquatimer

Strap for GST Perpetual Calendar Stainless Steel / White / Italian

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 diameter43 mm
ReferenceIW3756-18 (aka: IW375618)
FamilyGST Aquatimer
MovementIWC caliber 79261 hours, minutes, small seconds | date, day, month, perpetual calendar, year indicator | Chronograph
Year2001 - 2004
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 IW3756-18 (aka: IW375618)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The GST Aquatimer IW3756-18 (aka: IW375618), seen from the bench

The GST Aquatimer IW375618 is equipped with the IWC caliber 79261, an automatic movement with chronograph and full perpetual calendar functions. The watch displays hours, minutes, small seconds, date, day, month, and year through the integrated perpetual calendar mechanism. The reference combines the features of a dive watch with the high-watchmaking complications of the perpetual calendar.

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