Yes — watch winders can potentially cause magnetization, but it is rare and usually happens only in specific situations. Most modern, high-quality watch winders are designed to be safe for automatic watches and do not normally create strong magnetic fields.
How Magnetization Happens
Magnetization occurs when a watch is exposed to a strong magnetic field. Inside a mechanical watch, tiny metal components — especially the balance spring — can become magnetized. When this happens, the coils of the spring may stick together, which affects timekeeping accuracy. The watch might start running too fast, too slow, or irregularly.
Watch winders use small electric motors to rotate the watch. Electric motors can produce weak magnetic fields. However, these fields are usually minimal and well shielded in reputable watch winders. Problems are more likely to occur if:
- The winder uses a cheap or poorly designed motor.
- The watch is placed extremely close to the motor without proper shielding.
- The winder is damaged or built with low-quality materials.
Realistic Risk Level
For most users, the risk is very low. Many collectors store expensive mechanical watches in winders for years without any magnetization issues. High-quality brands design winders specifically to avoid exposing watches to harmful magnetic fields.
The bigger magnetization risks usually come from everyday items such as smartphones, speakers, laptop covers with magnets, or magnetic clasps on bags — not watch winders.
Signs Your Watch May Be Magnetized
If magnetization does happen, you may notice:
- The watch runs much faster than normal.
- Timekeeping becomes inconsistent.
- The second hand may behave unusually.
A watchmaker can easily fix magnetization using a simple demagnetizing tool. The process takes only a few minutes and does not damage the watch.
How to Stay Safe
To reduce any risk:
- Choose a trusted, well-reviewed watch winder.
- Avoid very cheap or unknown brands.
- Keep the watch winder away from strong magnetic devices.
- If you suspect magnetization, have the watch checked promptly.
Final Thoughts
Watch winders can technically cause magnetization, but it is uncommon and usually linked to poor-quality equipment. With a reliable winder and normal usage, your automatic watch is unlikely to experience any magnetic problems.
You may also read: How to Remove a Watch Winder Safely in 2026: A Simple, Expert Guide
