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Portugieser Perpetual Calendar Tourbillon

Automatic winding, Diameter 45.0 mm

Blue, Platinum Case

PRODUCT INFORMATION

  • Blue dial
  • Blue alligator leather strap by Santoni Strap width 22.0 mm

DELIVERY & RETURNS INFORMATION

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Portugieser Perpetual Calendar Tourbillon

The Portugieser Perpetual Calendar Tourbillon combines the legendary perpetual calendar by Kurt Klaus with a flying tourbillon at 12 o'clock.

Perpetual calendar | IWC Schaffhausen

In the early 1980s, IWC’s head-watchmaker Kurt Klaus set out on an engineering journey to translate the Gregorian calendar with its many irregularities into a mechanical program for a wristwatch. His ingenious perpetual calendar, which debuted in the Da Vinci Perpetual Calendar in 1985, comprises only about 80 parts and displays the date, day, month, year in four digits, and the moon phase. The smart mechanical program automatically recognises the different length of the months, and even adds a leap day at the end of February every four years. The moon phase display is so precise that it will deviate from the actual phase of the moon by just one day after 577.5 years. All displays are perfectly synchronised and can be adjusted simply by turning the crown. Some models come with an additional century slide, so the watch can continue showing the date until 2499. The calendar only needs a small adjustment in those centurial years that skip the leap year, which is the case in 2100, 2200, and 2300. Some versions of the calendar feature a double moon phase display, showing the moon phase on the northern and southern hemispheres.

'Case'
  • Features
  • Case
  • Movement
  • Packaging
  • Rotor in 18-carat 5N gold
  • Pellaton automatic winding
  • Sapphire glass, arched-edge, antireflective coating on both sides
  • Power reserve display
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
  • Flying minute tourbillon
  • 7 days power reserve
  • Limited to 50 pieces
  • Case Platinum Case
  • Diameter 45.0 mm
  • Height 15.2 mm
  • Back case See-through sapphire glass back
  • Water resistance 3.0 bar
  • Calibre 51950 Calibre
  • Movement type Automatic winding, IWC-manufactured movement
  • Power Reserve Indicator 168 hours
  • Frequency 19'800 VPH (2.75 Hz)
  • Components 447
  • Jewels 54

Contact Concierge

Do you have a question about a product, your order or our service? Contact us via phone, email, or through our Whatsapp service.