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Portugieser Perpetual Calendar

Automatic winding, Diameter 44.2 mm

Blue, 18 ct Armor Gold® Case

PRODUCT INFORMATION

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

DELIVERY & RETURNS INFORMATION

Limited Availability – contact us to learn about purchase options

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Portugieser Perpetual Calendar

This special edition of the Portugieser Perpetual Calendar captivates with a nautical design in dark blue and gold.

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
  • Small hacking seconds
  • 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
  • 7 days power reserve
  • Case 18 ct Armor Gold® Case
  • Diameter 44.2 mm
  • Height 14.9 mm
  • Back case See-through sapphire glass back
  • Water resistance 3.0 bar
  • Calibre 52611 Calibre
  • Movement type Automatic winding, IWC-manufactured movement
  • Power Reserve Indicator 168 hours
  • Frequency 28'800 VPH (4 Hz)
  • Components 381
  • 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.