IWC · GST Aquatimer
Strap for Aquatimer Automatic Stainless Steel / Silver / Rubber
The Aquatimer Automatic Stainless Steel / Silver / Rubber 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 diameter42 mm
ReferenceIW3290-03 (aka: 3290-03, IW329003)
FamilyGST Aquatimer
MovementIWC caliber 30120 hours, minutes, seconds | date
Year2014 - 2021
CaseStainless Steel
Straps for the GST Aquatimer IW3290-03
Selected for the 20 mm lug width · workshop selection
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Millennium Green Alligator Strap€195
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Vintage Olive Green Calf Leather Watch Strap€80
Italian Calfskin Rally Strap in Cognac€110
The GST Aquatimer IW3290-03, seen from the bench
The IWC GST Aquatimer IW3290-03 is a professional diving instrument launched by IWC Schaffhausen in the 1990s. It features a 42mm stainless steel case with unidirectional bezel, sapphire crystal, and 300-metre water resistance. The model is powered by the IWC 30120 calibre, an automatic movement with manual winding and date function. The 20mm lug width accommodates custom straps while maintaining optical balance on the 42mm case. This tool watch prioritizes robustness, legibility, and reliability for extreme underwater missions.
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
Bespoke straps for IWC, in the atelier or by video call: casatimilano.com