IWC Schaffhausen PORTOFINO HAND-WOUND MOON PHASE Mode D'emploi page 21

— 2 2 —
I N F O R M A T I O N A B O U T M A G N E T I C F I E L D S
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,
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.
Watches with a soft-iron inner case provide a higher level of
protection against magnetic fields and far exceed the require-
ments of DIN standard 8309. Nevertheless, it is still possible for
the watch movement to become magnetized in close proximity to
very strong magnets. We therefore recommend that watches with
a soft-iron inner case also be kept away from direct contact with
strong magnets.
Should there be a sudden change in the precision of your time-
piece, please contact an authorized IWC Official Agent to have
your watch checked for magnetism.
P O R T O F I N O H A N D - W O U N D T O U R B I L L O N R É T R O G R A D E