20
2. Correcting the date: pull the crown out to position 2, turn the 
crown backwards (forwards for calibres 2520, 8520, 8521, 8700, 
8701, 8704 and 8705) and push it back to position 1.
  For calibre 2610 only: date adjustment is made by instantaneous 
jumps.
 
NB: date-setting is not recommended between 8 pm and 2 am.
3. Time setting: hours – minutes – seconds. Pull the crown out to 
position 3. The seconds hand will stop. Turn the crown forwards or 
backwards. Synchronise the seconds by pushing the crown back 
to position 1 to coincide with a given time signal.
Power reserve for calibre 2627:
•  Counter at 9 o’clock: small seconds.
•  Counter at 6 o’clock: power reserve 
indicator.
  When the watch is fully wound, the 
power reserve indicator hand points 
to 4/4. This means that the power 
reserve is at least 44 hours.
Power reserve:
If the watch is not being worn, or during periods of low activity, the 
power reserve indicator hand progressively moves anti-clockwise.
If the power reserve indicator hand is pointing to below 1/4, this means 
that the watch’s power reserve is less than 10 hours. In this case, the 
watch should be worn or wound by hand to prevent it from stopping.
During manual winding (crown in position 1) or when worn (self-
 
winding), the power reserve indicator hand moves clockwise.
Manual & self-winding watch
2 Operating instructions