IWC GST Deep One

A sporty, and highly technical, diver’s watch equipped with a depth gauge complication invented by Richard Habring during his time at IWC. Circa 1999.  Case: Titanium case with three crowns: one to turn the internal bezel, one for time setting, and one, at 4 o’clock, where water enters the Bourdon system and where the included pump can be attached. Bracelet: Titanium bracelet with deployment clasp. Velcro strap also included. Dial: Black dial with depth scale, internal rotating bezel (first fifteen minute segment in yellow LumiNova), central hours and minutes, small seconds at six o’clock. Date at three o’clock. Large white hand to indicate current depth. Yellow hand indicates deepest depth reached. Movement: Self-winding, IWC caliber 8914, based on the JLC caliber 891. 36 jewels. 28,800 mph (4 Hz). 36 jewels. 38 hours of power reserve. Diameter: 42.8mm. Thickness: 14.75mm. Condition: Excellent condition. Complete set with box, case, papers, velcro straps, and aluminum pump.  More abou