IWC · GST Aquatimer

Strap for Aquatimer Perpetual Calendar Digital Date-Month Edition 50 Years Aquatimer

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 straps All IWC

Lug width22 mm

Case diameter49 mm

ReferenceIW3794-03 (aka: IW379403)

FamilyGST Aquatimer

MovementIWC caliber 89802 Hours, Minutes, Small Seconds | Big Date, Leap Year, Month, Perpetual Calendar, Date | Chronograph, Flyback

CaseCeratanium

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 IW3794-03 (aka: IW379403)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The GST Aquatimer IW3794-03 (aka: IW379403), seen from the bench

The IWC GST Aquatimer reference IW379403 features the automatic caliber 89802 with flyback chronograph and perpetual calendar with large date. The movement integrates indications for month, leap year and small seconds along with the chronograph functions. The watch combines the diving characteristics of the Aquatimer line 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