Using a Q-Link pendant to help fatigue ?

I've got a Q-Link pendant on a 90-day trial. I am a skeptic but had to admit that it seems to be doing something. I feel less fatigue.
I work with three computers in my office and many screens.

My skepticism about Q-Link is that it is supposed to emit some kind of sympathetic resonance to help your body but it has no power source. I doubt whether body heat can provide enough power for it to do that.

I am more inclined to focus on the fact that there is a copper twined in the center and the copper is doing something to absorb or deflect the emfs.

Has anybody got any comments on the Q-Link and the copper questions? I am wondering,"why not just buy a copper necklace...?"
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