IWC · GST Aquatimer

Strap for Aquatimer Perpetual Calendar Digital Date-Month Titanium / Red Gold / Blue

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

Lug width

20mm

20 mm straps All IWC

Lug width20 mm

Case diameter49 mm

ReferenceIW3794-02 (aka: IW379402)

FamilyGST Aquatimer

MovementIWC caliber 89801 Hours, Minutes, Small Seconds | Big Date, Leap Year, Month, Perpetual Calendar, Date | Chronograph, Flyback

CaseTitanium, Red Gold

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 IW3794-02 (aka: IW379402)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The GST Aquatimer IW3794-02 (aka: IW379402), seen from the bench

The GST Aquatimer reference IW379402 is powered by the IWC caliber 89801 with flyback chronograph and perpetual calendar functions with big date, month and leap year indicator. The watch combines the features of a diver's timepiece with the high-watchmaking complications of the IWC in-house movement. The caliber 89801 offers hour, minute, small seconds and chronograph with flyback function.

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