IWC · GST Aquatimer
Strap for GST Perpetual Calendar Titanium / French
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 diameter43 mm
ReferenceIW3756-04 (aka: IW375604)
FamilyGST Aquatimer
MovementIWC caliber 79261 hours, minutes, small seconds | date, day, month, perpetual calendar, year indicator | Chronograph
Year2001 - 2004
CaseTitanium
Straps for the GST Aquatimer IW3756-04 (aka: IW375604)
Selected for the 22 mm lug width · workshop selection
Millenium Cognac Alligator Strap€195
Matte Blue Alligator Strap€195
Matte Grey Alligator Strap€195
Novonappa Black Military Style Strap for IWC Pilot€142
Hammered calfskin strap in cuoio€98
The GST Aquatimer IW3756-04 (aka: IW375604), seen from the bench
The IWC GST Aquatimer IW3756-04 is a professional diving instrument featuring a 43mm titanium Grade 5 case with a 22mm lug width. Powered by the IWC caliber 79261 perpetual chronograph movement integrating perpetual calendar, year indicator, month and week display, it combines mechanical chronograph functions with robust timekeeping. Certified for 300 meters water resistance and designed for extreme underwater operations, this timepiece exemplifies German engineering applied to professional diving exploration.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only