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[Categories] Magnetism [Answer] As a matter of principle, avoid exposing your wristwatch to magnetic fields for any length of time. All mechanical movements contain parts that can be magnetised, depending on the strength of the field. The German industrial standard DIN 8309 states that a mechanical watch is antimagnetic if it can be exposed to a magnetic field of strength 4800 A/m (the equivalent of 6 Militesla (mT)) and subsequently shows no major signs of impaired functionality. Certain models from IWC, such as the Ingenieur and the Pilot’s Watches, feature additional protection from magnetic fields in the form of a soft-iron inner case. This provides them with considerably more effective shielding against magnetic fields. However, if your IWC watch should ever become magnetised and as a result inaccurate, IWC authorised retailers are able to demagnetise the watch quickly and simply. [Question] 
Do magnetic fields pose a problem for my IWC watch?
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