iwc 3818 Mode D'emploi page 13

WINDING POSITION
With the crown in the winding position (0), you can also wind the automatic movement by hand. A few
revolutions of the crown are enough to start the movement. However, it is recommended to wind
the watch by turning the crown through approximately 20 revolutions as this will ensure maximum
precision.
SET TING THE TIME AND CALENDAR
If you have not worn your watch for more than 68 hours, the watch will normally stop at midnight, as
the changeover of the calendar uses a great deal of energy.
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.
INGENIEUR PERPETUAL CALENDAR DIGITAL DATE-MONTH
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TIME SET TING
Release the screw-in crown. This makes it jump to position 0. We recommend winding the movement
at least 20 times with the crown in this position. 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 as the small seconds hand passes 60. Push back the crown to position 1. In
this position, you can safely set the date to the previous day. If you now pull the crown out to position
2, you can set the exact time in hours and minutes. If the date does not jump to today's date when it
passes 12 o'clock, you must wind the hour hand forward by a further 12 hours. Once the hour and
minute have been set to the correct time using this process, push back the crown to position 0 to
start the seconds hand. By depressing the crown in position X and turning it to the right at the same
time, it is screwed down firmly again and secured.
INGENIEUR PERPETUAL CALENDAR DIGITAL DATE- MONTH
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