Patek Philippe R 27 Q Mode D'emploi page 3

Introduction
This wristwatch unites two complications
consummately mastered by Patek Philippe: a
perpetual calendar and a minute repeater. The
self-winding movement with a strike train em-
bodies all functions of a full calendar as well as
a moon-phase display. The Ref. 5074 stands out
with remarkable sonority. Patek Philippe devo-
ted considerable resources to metallurgical and
acoustic research with the aim of crafting gongs
that produce an incomparably pure sound.
Reference 5074
Caliber R 27 Q
Self-winding wristwatch with
minute repeater and perpetual calendar.
The minute repeater
On demand, the minute repeater strikes the hours,
the quarter-hours, and the minutes that have elapsed
since the last quarter-hour. One hammer strikes the
hours on the low-pitched gong once for each hour.
Subsequently, each quarter-hour is sounded as an
alternating double strike by two hammers on both
the high- and low-pitched gongs. Finally, the second
hammer strikes the high-pitched gong to count the
number of minutes that have passed since the last
quarter-hour.
12 low strikes, three double high-low strikes, 14 high
strikes: This constitutes the melody with a total of
32 strikes at 12:59.