IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph

The IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph IW394007 is a chronograph in a platinum case measuring 43.5 mm across. The case stands 15.9 mm thick, with a lug width of 22 mm, and carries a rating of 3 bar, or 30 metres. Inside is the manufacture calibre 89900, a self-winding movement with 68 hours of power reserve. The dial sits under a sapphire crystal with an arched edge and antireflective coating on both sides. Complications include a flying minute tourbillon and a retrograde date display, alongside a flyback chronograph with hour and minute counters combined in a totalizer at 12 o'clock. The display back shows the movement, including a rotor in 18-carat gold. The watch is fitted with a blue alligator leather strap made by Santoni.