Re: resistance to magnetism, this is a good read:
https://www.hodinkee.com/articles/a-rolex-milgauss-an-omega-greater15000-gauss-and-a-4000-gauss-neodymium-magnet
I just realised my iPhone 12 have a magnet back which isn’t helpful.
@Regal started
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Re: resistance to magnetism, this is a good read:
https://www.hodinkee.com/articles/a-rolex-milgauss-an-omega-greater15000-gauss-and-a-4000-gauss-neodymium-magnet