IWC Portugieser Hand-Wound Tourbillon Watch - 18K Armor Gold® Case - Silver-Plated Dial - Black Alligator Leather Strap - IW545801

42.4 mm 18K armor gold® case, 10.8 mm thick, see-through sapphire glass back, convex sapphire glass crystal with antireflective coating on both sides, silver-plated dial, calibre 81905 manual-winding movement with date, day, chronograph, rattrapante, hours, minutes, small seconds, approximately 84 hours of power reserve, black alligator leather strap by santoni. Water resistant to 6 bar.