🧲 Magnetic Field Exposure Calculator

Select everyday items around your watch to estimate a cumulative magnetism risk score. Educational relative score — not a lab measurement.

Daily Exposure Checklist

Phone often against the wrist / watch Tablet or laptop speakers near the watch Magnetic bag clasp / purse magnet Magnetic charger / car mount near the watch Headphones / earbud case with magnets Fridge speakers / strong speaker magnets Gym sensors / magnetic closures repeatedly Occasional office magnets / whiteboard magnets

How to Reduce Risk

• Keep phones and magnetic clasps off the watch case when possible
• Don’t rest the watch on speakers or magnetic chargers
• If timing suddenly runs very fast, check for magnetism

Modern anti-magnetic watches tolerate more exposure, but cumulative close contact still matters.

Important Limits

Distance, duration and magnet strength change real risk a lot. This score is a relative education tool, not a gauss-meter reading.

Sudden large rate errors can also come from other causes. Demagnetize/test if magnetism is suspected.

Frequently Asked Questions

Can a phone magnetize a mechanical watch? Close repeated contact can contribute to magnetism risk, especially with strong phone accessories or cases.

Are magnetic bag clasps a problem? Yes, they are a common real-world exposure source when the watch sits against them.

What does magnetism do to a watch? It can make the watch run fast or erratically until demagnetized.

Is this score exact? No. It is a cumulative relative guide based on common exposure sources.