IWC · GST Aquatimer
Strap for Aquatimer Chrono-Automatic Stainless Steel / Rubber
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 diameter42 mm
ReferenceIW3719-33 (aka: 3719-33, IW371933)
FamilyGST Aquatimer
MovementIWC caliber 79320 hours, minutes, small seconds | date, day | Chronograph
Year2004 - 2009
CaseStainless Steel
Straps for the GST Aquatimer IW3719-33 (aka: 3719-33, IW371933)
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 IW3719-33 (aka: 3719-33, IW371933), seen from the bench
The IWC GST Aquatimer IW3719-33 is a professional diving chronograph from the 1990s featuring a 42 mm stainless steel case and caliber 79320 manual-wound movement with integrated chronograph, date window, and day-of-week subdial. Water-resistant to 1200 meters, it combines robust engineering with sapphire crystal and unidirectional rotating bezel. The 22 mm lug width accommodates standard straps while maintaining optimal case proportions for underwater operations.
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