15/06/2026
Redefining Tomorrow, Today.
Protected by five patents, the crown-operated ProSet Perpetual Calendar is an intricate mechanism developed over almost a decade. Its multiple functional layers feature highly complex geometries made possible through the advanced LIGA manufacturing process.
The moon phase indication also reaches a new level of precision, remaining accurate for 1,044 years.
The next-generation Perpetual Calendar, designed to turn back time.
IWC-ProSet is a testament to IWC's advanced calendar expertise, as our watchmakers build on Kurt Klaus's legacy and bring it into the future. The Big Pilot's Watch Perpetual Calendar ProSet Le Petit Prince houses the completely redesigned module with seamless forward and backward adjustment, while an engraved Little Prince on the case back and rotor adds a poetic touch – connecting past, present, and future.
Ref. IW329601
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Find out more on www.bartorelli.it