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T h E T E C h n I C a l R E F I n E M E n T S O F T h E
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 d I G I T a l d a T E - M O n T h
E d I T I O n " 7 5 T h a n n I V E R S a R Y "
Your IWC watch shows you the time in hours, minutes and seconds with hands as
well as the date and the month in a large digital display and the leap year. You can
use the integrated flyback chronograph to measure any period of time up to 12 hours
in seconds, minutes and hours. Stop times can be added together. The mechanical
movement with automatic winding has a power reserve of approximately 68 hours
when fully wound. The engraved rotor made of 18-carat red gold winds the watch in
both directions of rotation via the IWC double-pawl winding system. Your Portugieser
Perpetual Calendar Digital Date-Month Edition "75th Anniversary" is protected by an
arched-edge sapphire glass of hardness grade 9 on Mohs' scale. The glass is retained
securely in the case at low pressure, for example when a drop in air pressure occurs
at extreme altitudes. Your watch is water-resistant 3 bar. In addition to the uniqueness
of its functions, it is the display's legibility and the ease with which it can be used
that distinguishes this watch from other complicated timepieces. To ensure that this
extraordinary watch continues to perform faultlessly in the future, it is essential to
observe a few important operating instructions.
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 d I G I T a l d a T E - M O n T h
E d I T I O n " 7 5 T h a n n I V E R S a R Y "