IWC Schaffhausen PORTUGIESER PERPETUAL CALENDAR Mode D'emploi page 27

Pull out the crown to position 1. In this position, you can use the
direct-advance function to move the calendar forwards one step
at a time by turning the crown slowly to the left. The calendar
must not be adjusted between 8 p.m. and 2 a.m.
Please note:
– Turning the crown too quickly when setting the calendar might
result in a faulty advance and the desynchronization of the indi-
vidual calendar displays (e.g. date, day, moon phase). In such a
case, the movement needs to be reset by an IWC watchmaker.
– You must not move the calendar beyond the correct date. The
complicated movement is mechanically programmed and can-
not be moved back in time without making a professional ad-
justment to the movement. However, if you do move the date
forwards beyond the correct date, you have two options: You
can either pull out the crown to position 2 to stop the move-
ment until the calendar setting matches the correct date once
again. This makes sense if the date has been set only a few
days ahead. Or, you take your watch to your watchmaker, who
will be able to adjust the movement to reset the calendar. This
is recommended in the event of larger maladjustments.
P O R T U G I E S E R P E R P E T U A L C A L E N D A R
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