IWC
GST Aquatimer IW3727-02— lug 20mm
IWC GST Aquatimer IW3727-02: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
IWC IW3727-02The essential strap measurement.
Browse 20mm straps →IW3727-02
Jaeger-LeCoultre caliber 631 Hours, Minutes, Small Seconds | Date | Chronograph
The Heritage
Compatible Straps
Selected for the 20mm lug width of the GST Aquatimer
FAQ
What is the lug width of the IWC GST Aquatimer IW3727-02?
The IWC GST Aquatimer IW3727-02 has a lug width of exactly 20mm, measured from the inner edge to the inner edge of the lateral metal rings on the case. This dimension was engineered by the Schaffhausen manufacture to maintain visual and structural balance on a 34mm diameter case.
What is the best strap for the IWC GST Aquatimer IW3727-02?
The best strap depends on your use: Nile alligator offers formal elegance and a patina that ages beautifully; calf leather (Cordovan, vegetable-tanned calf, or suede) provides sobriety and authority; vulcanized rubber in grey or blue tones respects the original technical spirit; raw canvas NATO adds versatility for rotation use.
How do I change the strap on the IWC GST Aquatimer IW3727-02?
Changing the strap on the GST Aquatimer requires a spring bar tool. Remove the springs that secure the strap to the lateral lugs, extract the used strap, and insert the new one by aligning the holes with the spiral springs. The process is straightforward but requires care to avoid scratching the steel case.
Which aftermarket straps are compatible with the 20mm lug width of the IWC GST Aquatimer?
All straps with 20mm lug width are technically compatible, but we recommend models specifically designed for 34mm diameter watches. Milano Straps offers a curated selection of 20mm straps in alligator, calf, rubber, and NATO, customizable for your GST Aquatimer.
How long does a leather strap last on an IWC GST Aquatimer?
A quality leather strap (Nile alligator, Cordovan, vegetable-tanned calf) on a daily-wear watch typically lasts 3-5 years before requiring replacement. Durability depends on exposure to moisture, sweat, and UV rays. Casati Milano offers an 18-month warranty on all its handcrafted straps.
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 →By appointment only · Milan
The atelier's website: casatimilano.com