iwc PORTUGIESER PERPETUAL CALENDAR TOURBILLON Operating Instructions Manual page 13

— 1 3 —
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. The
same applies to turning the crown too
rapidly when setting the calendar.
We recommend winding the move­
ment at least 20 times with the crown
in position 0. Then pull the crown out
to position 2 in order to set the hour
and minute hands to approximately 6
a.m. To set the time accurately to the
second, it is best to stop the movement
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 T O U R B I L L O N