Anyone have details on how the Avocet 30 cyclocomputer magnet ring works?

[novocaine]

We used to have pots of it as kids but I suspect it's been H&S-ed

mix it with aluminium powder and add a stick of magnesium. poof the magic dragon, get's obliterated by a crazy hot burning goblet of magma.

unlike real glitter, that we call craft chlamydia in our house. because once it's in the house, you are never getting rid of it, ever, no matter how hard you try, there will always be a little bit left, for ever and ever and ever.