IWC Portugieser Hand-Wound Tourbillon 42.4mm Armor Gold IW545801

The IWC Portugieser Hand-Wound Tourbillon IW545801 combines classical elegance with exceptional mechanical complexity. Encased in a slim 42.4mm 18K Armor Gold case measuring just 10.8mm thick, the silver-plated dial is protected by a convex sapphire crystal with antireflective coating on both sides.

Inside beats the Calibre 81905 manual-winding movement with an extraordinary approximately 84-hour power reserve. This remarkable movement integrates a chronograph with rattrapante (split-seconds) function, date, day, hours, minutes, and small seconds — all driven by a hand-wound tourbillon mechanism visible through the see-through sapphire glass back.

Presented on a black alligator leather strap by Santoni, this Portugieser Hand-Wound Tourbillon is one of IWC’s thinnest and most refined grand complications. Water resistant to 6 bar.