IWC Portugieser Hand-Wound Tourbillon Day & Night

IWC is adding a Day & Night flavor to its Portugieser Tourbillon collection. Reminiscent of De Bethune, this version includes a day and night indication with a small three-dimensional globe that rotates around its axis once every 24 hours. This luxurious timepiece boasts an 18-carat Armor Gold® case and an Obsidian dial, while a hand-wound IWC Calibre 81925 movement keeps it ticking. The escapement for this movement is a hacking, flying tourbillon. The escape wheel and pallet are made from silicon and treated with IWC’s Diamond Shell coating to reduce friction, ensure smooth operation, and allow for an 84-hour power reserve.

Specifications

  • Reference: IW545901
  • Diameter: 42.4 mm
  • Height: 10.8 mm
  • Material: 18k Armor Gold
  • Crystal: Sapphire
  • Water Resistance: 60 m
  • Movement: Caliber 81925
  • Features: Hours, minutes, 60-second tourbillon, and day/night indicator
  • Frequency: 28,800 beats per hour (4 Hz)
  • Winding: Manual
  • Power Reserve: 84 hours
  • Strap: Alligator with 18k Armor Gold folding clasp
  • Limited Edition: No
  • Price: CHF80,000
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