IWC Schaffhausen Portugieser Chronograph Rattrapante Mode D'emploi page 24

— 2 4 —
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 (for example neodym-
ium-iron-boron) – these are found in objects such as loudspeakers,
jewellery and fasteners on mobile-phone cases and handbags –
mechanical watches are increasingly likely to come into contact with
such magnets and be 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 protec-
tion against magnetic fields and far exceed the requirements of DIN
standard 8309. Nevertheless, it is still possible for the watch move-
ment to be magnetized in the close proximity of very strong mag-
nets. 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 U G I E S E R C H R O N O G R A P H R A T T R A P A N T E