IWC Portugieser Tourbillon Mystere Retrograde Watch - 44.2 mm Platinum Case - Silver Dial - Black Alligator Strap - IW504601

44.2 mm platinum case, 15.3 mm thick, sapphire back, sapphire crystal with arched edge, antireflective coating on both sides, silver-plated dial, caliber 51900 pellaton automatic winding movement with power reserve display, retrograde date display, flying minute tourbillon, approximately 7-day of power reserve, black alligator leather strap by Santoni. Water resistant to 3 bar.