We recently had a request to replace the battery in a watch.
When replacing the battery, we also check for magnetism.
Most watches are magnetic.

Watches, regardless of age, are extremely susceptible to magnetism.
Some watches are magnetically resistant,
In this day and age, everyone has a smartphone or computer.
It is not possible to completely prevent magnetic fields.
Magnetism is the main cause of time errors in watches.
If the problem is minor, it may be possible to fix it by removing the magnetism without disassembling the machine.
Strong magnetic charging will require an overhaul.
This time, the magnetism was slight, so the problem was solved by removing the magnetism.
When using or storing electronic devices such as smartphones and tablets,
Please be careful not to place it near magnets or other magnetic objects.
Since magnetism is invisible, the only way to protect yourself is to be careful.
All you need to do is pay a little attention to the clock.
If you notice a significant discrepancy in the time while using the product, please feel free to request repairs!