Patek Philippe R 27 Q Mode D'emploi page 4

The "cathedral" gongs
To optimize the acoustic quality of a minute-
repeater wristwatch, the "cathedral" gongs are
shaped to encircle the movement not just once,
but nearly twice. This makes them almost twice
as long as conventional gongs. The result: greater
vibrational stability and better acoustic charac-
teristics.
Displays, functions, and correctors
D A
9
C
6 5 4
NOTE ON CORRECTING PERPETUAL CALENDAR DISPLAYS (PUSH PIECE A) AND MOON PHASE DISPLAY (PUSH PIECE C):
• PLEASE PERFORM ALL SETTINGS AND ADJUSTMENTS WITH THE CORRECTION STYLUS THAT WAS DELIVERED WITH YOUR
WATCH. THE USE OF ANY OTHER TOOL COULD DAMAGE YOUR WATCH.
• DATE AND MOON PHASE CORRECTIONS MUST BE MADE AT 7 AM. THIS IS THE ONLY WAY TO ASSURE THAT THE DATE CHANGE
MECHANISMS ARE NOT ENGAGED AND CANNOT BE DAMAGED.
• THE SETTING SEQUENCE DESCRIBED BELOW MUST BE STRICTLY OBSERVED.
B
1 2 7 8
3
The perpetual calendar
The perpetual calendar indicates the date, the day
of the week, the month, and the leap-year cycle,
automatically taking into account months with
28, 29, 30, and 31 days. It switches directly from
September 30 to October 1 or from February 28
to March 1. In leap years, it indicates February 29
before switching to March 1.
If the watch is worn regularly or kept in a winder,
the perpetual calendar mechanism will require
no manual correction until February 28, 2100, a
secular year in which, as an exception, February
29 is skipped.
DISPLAYS AND FUNCTIONS
1- Year (4 = leap Year)
2- Month
3- Moon phase
4- Calendar (date)
5- 24-hour dial
6- daY of the week
7- Manual winding
8- setting the tiMe
9- slide for aCtuating the Minute repeater
CORRECTORS
A-
Calendar CorreCtion push pieCes: date (4), Month (2), Year (1)
B-
CorreCtion push pieCes for the Month (2) and the Year (1)
C-
Moon-phase CorreCtion push pieCe (3)
D-
daY-of-week CorreCtion push pieCe (6)