IWC Schaffhausen PORTUGIESER PERPETUAL CALENDAR 42 Mode D'emploi page 26

– Setting the watch back by 12 hours during the afternoon between 2 p.m. and 10 p.m. will prevent
the calendar from advancing at midnight.
– Setting the watch back by another 12 hours the following morning between 2 a.m. and 11 a.m.
will synchronize the date display with the local date.
Warning:
If your watch has stopped between 10 p.m. and 2 a.m., you should on no account alter the date
using the rapid-advance date display with the crown in position 1. This would result in damage
to a component in the calendar mechanism which would require repair by a watchmaker.
As a result of the ever greater prevalence in recent years of very strong magnets made from rare-earth
alloys (e.g. neodymium-iron-boron) – these are found in objects such as loudspeakers and mobile
phones and fasteners on jewellery as well as handbags – mechanical watches are increasingly likely to
come into contact with such magnets and become magnetized. This can lead to the watch rate being
permanently affected, a problem that can only be resolved by a process of demagnetization carried
out by a specialist. We recommend that you keep your watch away from such magnets.
INFORMATION ABOUT MAGNETIC FIELDS
PORTUGIESER PERPETUAL CALENDAR 42
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