IWC Portugieser Yacht Club (IW390503)
Powered by the in-house 89361-calibre movement and water-resistant to 6 bar, the chronograph demonstrates its sporting qualities with a flyback function and an additional flange with quarter-second calibration for short stop times. Stop times longer than a minute are shown like the time of day on a separate analogue subdial. The case diameter has been reduced from 45.4 millimetres to 43.5 millimetres. Stainless steel case with black rubber strap. Mechanical chronograph movement, Self-winding. 68-hour power reserve.