====== IWC GST Aquatimer ======
{{wst>image_cr|IWC|GST Aquatimer}}
The **GST Aquatimer** is a [[dive watch]] by [[IWC]].
This dive watch classic has a [[titanium]] or steel case with a extreme [[water resistance]] to 2000 m.
**Ref. 3536**
**Movement:**
* [[Self-winding]] calibre 37524 (basis [[ETA 2892-2]]), 28,800 A/h
* [[Central seconds]] with stop mechanism, black date disc with white numerals
* 21 [[jewels]]
* [[Glucydur]] [[balance wheel]]
* [[Nivarox hairspring]], shockproof and [[anti-magnetic]]
* Power reserve 42 hours
**Case:**
* D 42 mm, H 14.5 mm
* Weight ca. 175g ([[titanium]] version ca. 116g)
* Unidirectional rotating, ratcheting diving bezel with polished relief figures, secured against unintentional adjustment
* Crown screwed within, 6.6 mm diameter, 3 seals, separate crown tube
* [[Domed]] [[sapphire crystal]] (not antireflective because of glass thickness of 2.7 bis 3.7 mm)
* [[Waterproof]] to 2000 m / 200 bar
**Dial:**
* Superimposed, [[rhodinated]] hour markers, dark gray / matte black dial
**Bracelet:**
* Proprietary IWC metal bracelet system with safety lock buttons or Velcro tape
**Optionen:**
* Black Velcro tape with Velcro closure ([titanium]] and steel design, Nr. A04920 and A04925) for diving
**Variations:**
* [[Titanium]] case with black dial, white hands and white, superimposed hour markers
**Specialties:**
* Till 2001 steel version with silver dial (ca. 600 to 800 pieces), goldenen hands and golden, superimposed hour markers
**Ref. 3536-001**
* from 1998
* Calibre 37524
* Case and bracelet in titanium, external bezel, dial black
****
* **Ref. 3536-002**
* from 1998
* Calibre 37524
* Case and bracelet in steel, external bezel, dial black
****
* **Ref. 3536-003**
* from 1998
* Calibre 37524
* Case and bracelet in steel, external bezel, dial silvered, hands and indexes gilded
===== Literature =====
*[[IWC-Uhren. Die "Schaffhauser" and ihre Geschichte]]; Author [[Reinhard Meis]]; ISBN 3853782531
*IWC, International Watch Co. Schaffhausen, Engl. ed.; Authors Hans-F. Tölke, Jürgen King; ISBN 3906500152
*Armbanduhren-Spezial IWC-Geschichte, Design, Technik; Author Jörg M. Mehltretter; ISBN 3898800458
*IWC - Die Noblen aus der Schweiz. Handbuch für den Uhrensammler; Author Jörg M. Mehltretter; ISBN 3898802272
*IWC, International Watch Co. Schaffhausen, Luxusausg. Engl. Ed.; Authors Hans-F. Tölke, Jürgen King ISBN 3906500160
{{tag>Watch_models Dive_watches IWC_models}}