Aside from not getting a rash, I have to say that I didn't perceive anything else. At least not to the degree that the testimonials on their website express. Well, I thought, I have a pretty high energy anyway, am most emotionally stable, have been meditating all my life, etc., etc., etc. Maybe I don't need whatever it is that the pendants are offering. So, I asked someone else to wear them. This person said that they irritated his chest and neck. I know that this can be a sign of emotional resistance, but let it go at that.
Next, I used a pendulum to determine if these are really, as their flyer says, "aligned to project a coherent energy field that supports the well being of the wearer." What I found was that, yes, they have an unusual energy signature that indicated that something was definitely going on with these pendants. They weren't just lifeless hunks of metal and whatever the buttons on the back are made of (glass or gemstone).
Bottom line? I don't know. Probably, they react to each individual in unique ways. Perhaps the greater the need, the greater the difference. Since they are pretty affordable, I would suggest looking at their website http://www.wellnesspendant.net and try them for yourself.