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Ingenieur Perpetual Calendar 41

Automatic winding, Diameter 41.6 mm

Blue, Stainless steel Case

PRODUCT INFORMATION

  • Blue dial
  • Stainless steel bracelet
  • Strap width 14.0 mm

DELIVERY & RETURNS INFORMATION

Limited Availability – contact us to learn about purchase options

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Ingenieur Perpetual Calendar 41

The Ingenieur Perpetual Calendar 41 is the first stainless steel model to combine the Gérald Genta-inspired Ingenieur design with the perpetual calendar developed by Kurt Klaus.

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
  • Pellaton automatic winding
  • Perpetual calendar with displays for the date, day, month, leap year and perpetual moon phase
  • Sapphire glass, convex, antireflective coating on both sides
  • Glass secured against displacement by drop in air pressure
  • Case Stainless steel Case
  • Diameter 41.6 mm
  • Height 13.3 mm
  • Screw in crown true
  • Back case See-through sapphire glass back
  • Water resistance 10.0 bar
  • Calibre 82600 Calibre
  • Movement type Automatic winding, IWC-manufactured movement
  • Power Reserve 60 hours
  • Frequency 28'800 VPH (4 Hz)
  • Components 309
  • Jewels 46

Contact IWC

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

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