Portugieser Eternal Calendar
Ref. IW505701
Price on request
The Portugieser Eternal Calendar is the first secular perpetual calendar from IWC Schaffhausen and automatically considers the Gregorian calendar’s leap-year exceptions. In addition, this horological marvel also features a moon phase display with a mathematical accuracy of 45 million years. The Portugieser Eternal Calendar was awarded the “Grand Prix de l’Aiguille d’Or” at the 24. Grand Prix d’Horlogerie de Genève.
Specifications
Case
- Case size
- 44.4 mm
- Thickness
- 14.9 mm
- Case material
- Platinum
Dial
- Dial
- White
Movement
- Movement
- automatic
- Caliber
- 52640
- Manufacture
- IWC
- Jewels
- 54
- Power reserve
- 168 h
Strap
- Strap/bracelet
- Black alligator leather strap by Santoni
Water
- Water resistance
- 50 m
About IWC
Founded in 1868 in Switzerland, IWC brings its own identity to contemporary watchmaking. Schaffhausen-based Swiss maison famed for the Portuguese, Pilot's, and Ingenieur lines, blending engineering with classical design. For collectors, it offers a compelling alternative to familiar names—one defined by personality, discovery, and a point of view all its own.
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