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How should I deal with the magnetization of my watch?

by SheldonLong 16 Sep 2022 0 Comments

How should I deal with themagnetization of my watch?


For the average watch owner, few modern factors pose a greater challenge to mechanical watch movements than the scourge of magnetism. Of course, water resistance is important, but if you don't want to get wet, you can usually see water coming and try to avoid it. On the contrary, magnetism is a silent, unseen threat to the everyday wearability of a watch, and many of you have dealt with the problem of a watch (or several) being magnetized.

The most prominent sign of magnetism is high degree of inaccuracy, usually being off by more than a minute per day. You can obtain a more precise reading by using a timegrapher. A magnetized watch usually gains more than a hundred seconds per day, and usually has an abnormally low amplitude, due to the restricted movement of the hairspring.

How can you tell when a watch is magnetized?

To test for magnetism, there are two simple methods that you can do at home:


Put a compass near the watch, and observe if the needle on the compass is attracted by the watch at all. If so, the watch is magnetized.


Using the Lepsi app: If you don't already have one, you can buy it for free on iTunes (Apple only).
Set up the app to position the magnetic sensor on the phone (follow the instructions). Click start and wait 3 seconds Place the watch about 1 cm from the sensor without touching the screen. If your watch is magnetized, a message "Magnetic detected" will appear, otherwise your watch is fine.

How Do I demagnetize My Watch?

  • Bring your watch to your watchmaker. Every watchmaker has demagnetizing equipment available in their shop and will be able to take care of your watch in a few minutes. The cost of this service is generally nominal or even free, depending on your relationship with the watchmaker.
  • Buy your own equipment. Generally, you can buy your own demagnetizer online for less than $20 and just wait for it to arrive. 

How to use a demagnetizer to demagnetize a watch

Once you’ve confirmed that your watch is suffering from magnetism, the solution is simple. Using a demagnetizer, the process takes as little as a minute. There are many styles of demagnetizer on the market, but they all work under the principle of generating randomized magnetic field to disrupt the ordered magnetic field in the watch to acheive the effect of demagnetization.

Here we will detail the process with the kind of demagnetizer that has a hole in its center. This kind of demagnetizer provides a stream of magnetic field. Another popular kind of demagnetizer is the pulse type, which sends out a pulse on the push of a button. In reality, all kinds of watch demagnetizer will work equally well, provided that you follow its instructions accordingly.

This stream type of demagnetizer can be turned on by pressing down on the button. Keeping the button pressed down, slowly put the watch from outside the loop to inside the loop, and then slowly take it out.
Now you can check if the watch is still magnetized. You can repeat the process for a few times if the demagnetization is not satisfactory.

For the pulse type, put the watch on the demagnetizer, push the button, then rotate the watch 90 degrees, and push the button again. This type of demagnetizer emits a pulse of rapidly decaying strength. So it automatically disrupts the magnetic field in the watch and thus demagnetize the watch.

After this, test the watch on a timegrapher again. If the rate returns to normal, the watch is demagnetized successfully. It might be possible that after being magnetized, the rate is within a normal range but not a desirable range. If so, you may need to regulate the watch.

How to protect a watch from magnetism

After demagnetizing a watch, you would want to minimize any further risks of magnetism. Otherwise, all your efforts in demagnetizing the watch would go to waste.

A general rule of thumb for protecting a watch from magnetism is twofold: avoid strong magnetism, and avoid prolonged exposure to magnetism. On one hand, you want the watch to stay away from strong magnetic field, which exists around microwaves, speakers, MRI scanner etc. On the other hand, the watch should not stay for a long period near magnetic objects. If you follow these rules, your watch should be free from magnetism.but even if it gets magnetized again, you’ll know what to do with it now.

Finally, there is no need to worry about magnetization when using Mozsly watch winder, because all our products have been anti magnetized.

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