Paintless dent removal

I wan to hear comments about this product I never saw before.
WOYOSMART Paintless Dent Repair WOYO PDR-007

The theory of how it should function is sound, but I have my doubts of effectiveness in the field WITHOUT damaging the existing paint. It's basically heating the metal in and around the dent using induction, but in my experience the heat required for some of the dent types they mention is easily high enough to damage a clear coat.

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