IWC Schaffhausen 4590 Mode D'emploi page 20

— 2 0 —
INFORMATION ABOUT MAGNETIC FIELDS
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 increas-
ingly 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 requirements of DIN standard 8309. Nevertheless, it is still possible for the
watch movement to become magnetized in close proximity to very strong magnets. We there-
fore 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 timepiece, please contact an author-
ized IWC Official Agent to have your watch checked for magnetism.
PORTOFINO AUTOMATIC MOON PHASE 37/PORTOFINO AUTOMATIC MOON PHASE 40