Pierre DeRoche PDR 4020 Mode D'emploi page 16

Power reserve
Power-reserve hand "6" moves towards the left (upwards) on the
indicator segment by rotation of the winding stem in position "A"
or by wrist movements. Conversely, it moves towards the right
(downwards) when the watch is neither wound, nor worn.
Special notes
1. Fast date adjustment is not advisable between 10 pm and
2 am using the "7" corrector push-button. Nonetheless, if
this were to be done, such an operation would not damage
the mechanism; however, the date would not jump when the
hands pass midnight, but only 24 hours later.
2. For any time-setting operation performed in a counter-
clockwise direction that includes passing midnight, the wearer
must bring the hands to at least 8 pm; in this case, the date
does not return to the previous day. The watch can then be set
to 10 pm for example. If the operation is done in this way, the
date will not jump at midnight either.
Maintenance
To ensure that your watch proves entirely satisfactory, we rec-
ommend:
• That you perform the customary handling operations in
compliance with the operating instructions
• That you have its water resistance tested every 2 to 4 years
• That you entrust the watch to P
watchmaker approved by the brand, for a complete overhaul
every 4 to 6 years
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