How does magnetism affect watches?
Magnetism will not affect digital watches unless placed directly on the battery, but magnetism can affect analogue watches, which use a tiny electric motor or spring to turn the hands. Powerful magnetism can affect the performance of this motor/spring. The good news is that although analogue watches may gain time or lose time under the influence of powerful magnetic fields, they will usually return to normal time-keeping as soon as they leave the source of magnetism.
