Portugieser Perpetual Calendar 44 zenith while the screw-down case back

while the screw-down case back adds durability

The Dynamic Lock-in Cuff is customisable to three different wrist sizes and locks your watches inside the winder

Since its creation in 1993

Designed to counteract gravity’s effect on timekeeping

Portugieser Perpetual Calendar 44 zenith while the screw-down case backIWC Schaffhausens 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. Warranty: 2 years International Limited Warranty (+6 years with registration to MyIWC)