IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph

The IWC Portugieser Tourbillon Rétrograde Chronograph, reference IW394005, is a chronograph with a 43.5 mm 18-carat Armor Gold case. The watch has a flying minute tourbillon; the case measures 15.9 mm thick. Self-winding calibre 89900 has a 68-hour power reserve, 42 jewels and 375 components. The blue dial has a date display. A blue alligator leather strap by Santoni is on the watch. The case carries a water-resistance rating of 30 metres. A see-through case back displays the movement. The dial is covered by arched-edge sapphire glass with antireflective coating on both sides.