IWC Schaffhausen - April 30, 2026

Familiar Dial. Transformed Within.

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Moving through time, forward and backward.

Familiar on the outside, radically re-engineered within: the Perpetual Calendar ProSet displays the date, day of the week, month, moon phase, and year on the dial.

Inside, however, everything has changed. The groundbreaking new module architecture – based entirely on gears – enables true forward and backward calendar adjustability for the first time.

Created in ceramic, steel, and 18-carat 5N gold in the Pilot’s Watch collection, the Perpetual Calendar ProSet brings the same complication in three entirely different watches.

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An innovative new module architecture.

The Perpetual Calendar ProSet addresses one of the final challenges in perpetual calendar design: true forward and backward adjustability through a single crown position.

The innovation is made possible by a newly engineered module, constructed entirely from gears and protected by five patents. The gear train leading to the moon phase display has also been re-engineered, resulting in a remarkable accuracy of one day's deviation in 1,040 years.

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The Perpetual Calendar
ProSet.

Big Pilot’s Watch
Perpetual Calendar ProSet
Le Petit Prince

IW329601

$38,800

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Big Pilot’s Watch
Perpetual Calendar ProSet
Le Petit Prince

IW339601

$41,600

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Big Pilot’s Watch
Perpetual Calendar ProSet

IW329602

$54,700

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