IWC 18ct Red Gold Aquatimer Chronograph IW3769. IWC's first diver's watch with a precious metal case and a transparent sapphire-glass case back. Automatic IWC 89360-calibre movement. 44mm case, water resistant to 12 bar, 120 meters.  Black dial. The sub dial at 12 o’clock has two time scales –minutes on the outer and hours on the inner circle– and hours and minutes hands making it especially easy to tell elapsed time. The sub-dial at 6 o’clock is reserved for the small seconds counter and the date display window. Complications: Date, bi-compass fly-back chronograph. Power reserve: 68 hours. Black strap. Pre-owned UNUSED.