IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph

The IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph IW394006 is a chronograph with a 43.5 mm platinum case. The case measures 15.9 mm thick, and the case carries a 30 metre water resistance rating. Sapphire glass with an arched edge and antireflective coating on both sides covers the dial, and a display back shows the movement. The self-winding calibre 89900 is IWC-manufactured and runs with 68 hours of power reserve. Beyond the flyback chronograph, the watch carries a flying minute tourbillon and a retrograde date display, with hour and minute counters combined at 12 o'clock. The dial is silver plated. IWC fits this reference with a blue alligator leather strap by Santoni.