IWC · GST Aquatimer
Strap for Aquatimer Split Minute Chronograph
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 diameter44 mm
ReferenceIW3723-01 (aka: 3723-01, IW372301)
FamilyGST Aquatimer
MovementIWC caliber 79470
Hours, Minutes | Date | Chronograph
CaseTitanium
Straps for the GST Aquatimer IW3723-01 (aka: 3723-01, IW372301)
Selected for the 20 mm lug width · workshop selection
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
Novonappa Black Strap — IWC Pilot Style€149
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
The GST Aquatimer IW3723-01 (aka: 3723-01, IW372301), seen from the bench
The IWC GST Aquatimer IW3723-01 is a professional diving chronograph from the 2000s featuring a 44mm titanium case with integrated bracelet and 20mm lug width. It houses the IWC caliber 79470 automatic movement with hours, minutes, chronograph and date. Designed for operational efficiency rather than aesthetic compromise, this technical instrument delivers water resistance to 300 meters and represents authentic engineering philosophy appreciated by professionals and informed collectors.
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