IWC Schaffhausen’s perpetual calendar was originally developed during the 1980s by former head-watchmaker Kurt Klaus. In 2003, the legendary complication was presented in the Portugieser collection for the first time. Since then, the Portugieser Perpetual Calendar has been a major pillar of the collection.
- Dune dial
- Black alligator leather strap by Santoni
- Strap width 22.0 mm
- 7 days power reserve
- Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
- Rotor in 18-carat 5N gold
- Small hacking seconds
- Pellaton automatic winding
- Power reserve display
- Double box-glass sapphire crystals, antireflective coating on both sides
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