IWC · GST Aquatimer

Strap for GST Chronograph MecaQuartz Titanium

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 diameter34 mm

ReferenceIW3727-01

FamilyGST Aquatimer

MovementJaeger-LeCoultre caliber 631 hours, minutes, small seconds | date | Chronograph

Year1999 - 2002

CaseTitanium

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 IW3727-01

Selected for the 20 mm lug width · workshop selection

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The GST Aquatimer IW3727-01, seen from the bench

The IWC GST Aquatimer IW3727-01 is a professional diving instrument from IWC's General Systems Technology line, designed for recreational immersions to 300 metres. The 34 mm titanium case houses a Jaeger-LeCoultre caliber 631 manual chronograph movement with hours, minutes, small seconds, date function and integrated chronograph. Fixed 20 mm lugs welded directly to the case ensure secure strap changes without compromising water resistance. Titanium grade 5 offers approximately 40% weight reduction compared to stainless steel and superior corrosion resistance in salt water environments.

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