When your watch starts running too fast
Has your automatic watch suddenly started gaining time - maybe even up to a full minute per day?
Chances are, it’s been affected by magnetism. It might sound like a big problem, but it’s actually very common and super easy to fix.
Most people don’t even realize how often they come across magnetic fields. Phones, laptops, speakers, and even handbags with magnetic clasps can all affect your watch. But if it happens - don’t panic. There’s a simple solution.
What is magnetism, really?
Inside your mechanical watch is a hairspring. It controls the balance wheel and helps the watch keep time. When exposed to a magnet, this tiny spring can become magnetized.
When magnetized, the coils of the hairspring can start sticking together. That makes the balance wheel move faster than it should. The result? Your watch runs fast - often several seconds or even up to 60 seconds per day.
The good news? There’s no lasting damage. And it can be fixed in seconds.
How to check if your watch is magnetized
Here are 3 quick ways to check:
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Use an app like LEPSI (iPhone) or Physics Toolbox Magnetometer (Android)
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Try a compass: Hold it near your watch. If the needle moves, your watch is magnetized
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Watch the time: If your watch is gaining time fast, that’s a strong clue
Magnetism doesn’t hurt your watch - it just makes the timekeeping go off.
How to fix magnetization
There are two easy ways to fix the problem:
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Use a demagnetizer
These can be bought online and are simple to use. Put the watch on top of the demagnetizer, press a button, move the watch slowly away, and you’re done. -
Visit a local watchmaker
Many offer demagnetization for free or for a small fee. It takes a few seconds to do, and you’re good to go.
How to prevent it from happening again
Simple steps that make a big difference
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Don’t store your watch near phones or speakers
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Avoid placing it close to magnets or wireless chargers
Being mindful goes a long way.
Final word: It’s fixable and nothing to fear
Magnetism is not dangerous. It doesn’t harm your watch, and it’s easy to reverse.
If your timepiece suddenly starts running too fast, don’t stress. Now you know why - and what to do. With a compass, an app, or a trip to the local watchmaker, you’ll be back on track in no time.
Want to learn more?
If you're curious about how your automatic watch works, here are a few great next reads:
👉 Explore the full blog here for more guides and stories from the world of watchmaking.
