The Effects of Magnetism on Watches: What You Need to Know
Your watch isn’t just a pretty face—it’s a finely tuned machine! But throw some magnetism in the mix, and things can go haywire. We've teamed up with our watchmakers to dive into watch magnetism, exploring the cause, effects, diagnosis, fixes, and preventative steps you can take to keep your trusty timepiece from turning into a ticking disaster.
How Does Magnetism Impact Your Watch and What Causes It?
Magnets—perhaps like myself, when you think of magnets, you instantly have flashbacks of science lessons at school, but it’s truly amazing how they’ve become such an integral part of the everyday objects we use. From mobile phones and televisions to wireless headphones, speakers, coffee machines, and even jewellery with magnetic clasps, magnets are all around us—often hidden in places we wouldn’t expect.
You might wonder, Why does this matter for your watch? Well, wristwatches—especially those with mechanical movements—rely on delicate components like the balance spring and escapement wheel to regulate their timekeeping accuracy. These delicate components are designed to regulate the flow of energy, and any disruption can cause the watch to malfunction. Unfortunately, these components are often produced from ferromagnetic metals (iron, nickel, and cobalt), which can become easily magnetised when placed in an external magnetic field, resulting in a variety of issues for your watch's mechanism. For example:
When magnetised, the balance spring can become slightly distorted, leading to inconsistent oscillations and causing irregular timing.
A magnetised escapement in a watch can cause the watch to run erratically or stop working.
The coils of the balance spring can stick together, causing the watch to run faster than usual.
The pallet fork and escape wheel can stick together, reducing the amplitude of the balance wheel.
The escapement could lock up, or the springs could tangle.
How to Tell if Your Watch Has Gone a Little "Magnetic"
If you suspect magnetism has affected your watch, here are signs and methods to check for magnetisation:
Inaccurate Timekeeping
One of the most common effects of magnetism on a watch is inaccurate timekeeping. If your watch begins to run faster or slower than usual, it may have been magnetised.
Hands-on a Wild Ride
If you notice the hands on your watch have started moving erratically or have frozen altogether, it could indicate that the magnetic field has disrupted the watch's movement.
Use a Magnetic Detector App
Those of you looking for a more high-tech solution can now download a magnetic detector app to your smartphone. These apps use your phone’s built-in magnetic sensor to detect magnetism in nearby objects. The wonders of technology, right?
The Compass Test
Alternatively, for a more classic and reliable method, grab a compass, place it on a flat surface, and hold your watch over it. If the needle starts to move, your watch is magnetised.
Can My Phone Magnet Affect My Watch?
Yes, your phone's magnet can affect your watch, especially if it's a mechanical or automatic timepiece. Many smartphones, particularly those with magnetic charging pads, speakers, or cases with magnetic closures, contain magnets strong enough to magnetise your watch potentially.
Do Anti-Magnetic Watches Exist?
Yes, several watch brands have taken significant steps to minimise the impact of magnetic fields on their timepieces. Here are 10 notable anti-magnetic watches:
Here are five notable anti-magnetic watches known for their ability to resist magnetic fields:
Omega Seamaster Aqua Terra >15,000 Gauss
Renowned for its exceptional magnetic resistance, this Omega timepiece features the brand’s groundbreaking Master Co-Axial movement, which can withstand magnetic fields up to 15,000 gauss.
IWC Ingenieur Automatic
The IWC Ingenieur comes built with an anti-magnetic casing designed to protect its movement from magnetic fields commonly found in modern technology.
Jaeger-LeCoultre Master Ultra Thin
Renowned for its precision and innovation, this watch is equipped with a magnetic field shield to protect the movement from everyday magnetic interference.
Longines Conquest V.H.P. (Very High Precision)
Longines Conquest V.H.P. features an anti-magnetic movement that is highly resistant to magnetic fields, ensuring precise timekeeping even in magnetic environments.
Panerai Luminor Marina 1950 3 Days GMT
Some Panerai models, like this one, have anti-magnetic features. These features use advanced materials and designs to shield movement from magnetic fields.
How to De-Magnetise Your Watch?
One method you could try at home is to place your watch on a non-magnetic surface, such as wood or plastic, and leave it there for a few hours. The theory behind this method is that the watch will gradually lose its magnetisation over time. However, the most effective and reliable way to de-magnetise a watch is by using a de-magnetiser. However, these devices are pricey, and the likelihood of your watch becoming magnetised over its lifespan enough times to justify the investment is slim. So, it makes much more sense to take your watch to a local repair centre. There, a watchmaker can use specialised equipment, like the Greiner Vibrograf Magnotest II, which is far more accurate than relying on a compass or an app to detect magnetism in your watch.
Plus, if your watch has become magnetised, a watchmaker can open the case, carefully dismantle the mechanism, and inspect for damaged parts—such as a distorted or broken balance spring—that need replacing. This thorough approach ensures that your watch is not only de-magnetised but also fully restored to its optimal functioning.
How to Prevent Watch Magnetisation?
To avoid magnetising your watch in the future, consider these precautions:
Give Strong Magnetic Fields the Cold Shoulder:
It's easier said than done, as many everyday household items—like speakers, phones, and fridge magnets—can cause magnetisation. However, simply being mindful of where you place your watch can help prevent this issue.
Additionally, when travelling or working near sources of magnetism (e.g., MRI machines, industrial equipment, or strong electronic devices), consider removing your watch to avoid accidental exposure.
Servicing Your Watch:
During a watch service, the watchmaker carefully inspects the movement and other internal parts to ensure that any magnetisation hasn't caused long-term damage, such as wear or stress on the delicate components of your wristwatch. At AMJ, we recommend having your watch serviced every two to three years.
Ensure Your Watch Stays in Top Condition with AMJ Watch Repair.
Magnetism is a hidden menace that can throw off your watch's accuracy and functionality. Luckily, with the right care, you can prevent, detect, and fix magnetisation problems—ensuring your watch continues to run like the finely tuned machine it is.
If you suspect that your watch has been affected by magnetism, don’t wait—send it to AMJ Watch Repair. Our expert watchmakers are equipped with the latest technology to de-magnetise your watch and restore it to peak condition. Plus, we offer comprehensive servicing to catch any other issues that might be affecting your timepiece. Keep your watch in top shape, and let us handle the rest.
Contact AMJ Watch Repair today to schedule your service and get your watch running flawlessly again!
