Patek Philippe CH 28-520 IRM QA 24H Manual Del Usuario página 24

24
SPECIFICATIONS OF THE MOVEMENT
SELF-WINDING MECHANICAL MOVEMENT
CALIBER CH 28-520 QA 24H
DIaMEtEr
HEIGHt
nUMbEr of PartS
nUMbEr of JEWELS
PoWEr rESErVE
WInDInG rotor
baLancE SPrInG
frEQUEncY
baLancE
HaLLMark
displays
HOURS, MINUTES
SWEEP SECONDS HAND (CHRONOGRAPH HAND)
60-MINUTE COUNTER AT 6 O'CLOCK
annUaL caLEnDar WItH aPErtUrE DISPLaYS
– Day of week at 10 o'clock
– Date at 12 o'clock
– Month at 2 o'clock
DAY / NIGHT INDICATOR AT 6 O'CLOCK
correction push pieces (in the case flank)
DAY AT 9 O'CLOCK
DATE BETWEEN 9 AND 10 O'CLOCK
MONTH BETWEEN 8 AND 9 O'CLOCK
Buttons
CHRONOGRAPH START AND STOP AT 2 O'CLOCK
CHRONOGRAPH RESET AND FLYBACK AT 4 O'CLOCK
33 mm
7.68 mm
402
37
Min. 45 hours - max. 55 hours
Central rotor in 21K gold,
unidirectional winding
Gyromax
®
28,800 semi-oscillations/hour (4 Hz)
Spiromax
®
Patek Philippe Seal