In daily life, strong magnetic fields can be seen everywhere. Mobile phones, telephone handsets, computers, radios, magnetic buckles on bags, refrigerator doors, induction cookers, and various other appliances may cause watches to be magnetized. The most typical one is the magnetic clasp on the bag, which has a great influence on the mechanical watch, so the mechanical watch will be magnetized again unknowingly, and the magnetism will not recede by itself in this case, so it needs to be demagnetized and repaired to return to normal.
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