Patek Philippe GENEVE CALIBER 324 S QA LU 24H Mode D'emploi page 15

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PATEK PHILIPPE
ANNUAL CALENDAR
THE QUEEN OF USEFUL COMPLICATIONS
Introduced in 1996
Philippe, the Annual Calendar is the first time-
keeping mechanism that automatically displays
the month, the day of the week, and the correct
date under consideration of months with 30 and
31 days, so it must be adjusted only once a year on
March 1. Its construction represented a formidable
challenge. To eliminate rockers and levers to the
greatest possible extent, Patek Philippe's engineers
designed an architecture that relies mostly on
wheels and pinions. The caliber 324 S QA LU 24H
movement consists of 347 parts, whereas a con-
ventional perpetual calendar with a moon-phase
display needs only about 280 components. In the
meantime, the convenient, well-organized, and
user-friendly Patek Philippe Annual Calendar is
available in various versions with different sets of
displays. They constitute a collection of timepieces
that combine unique functionality with timeless
beauty. In the models that incorporate the self-
winding caliber 324 S QA LU 24H, the calendar
indications are complemented with a 24-hour dial.
Additionally, the Annual Calendar models feature
an extremely accurate moon-phase display that
deviates from the true lunar cycle by only one
day every 122 years.
and patented by Patek
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