Google the “Placebo Effect.” That’s how it works.
If you’re going to argue that you can wear a hologram on your wrist that’s somehow ‘in tune with your natural harmonics’ for health benefits… well, let’s look at that:
A hologram is a picture. Might as well carry a photograph of your cat.
Natural harmonics / energy field / yadda yadda is mumbo jumbo invented by people selling tat.
Assuming for a moment that you’re daft enough to accept that all of the above is true and “finely tuned holograms” do enhance your “energy field” – one size fits all? REALLY? We’re all the same? Damn, if I was marketing these I’d be selling a consultancy to measure your aura as a bare minimum, wasted opportunity.