I found this Pendant going through some old things. I cannot find the chain. This is when they fist came out so was pretty costly. The copper is somehow supposed to help with all kinds of ailments, back pain. My problem was remembering to wear it because I was near a child ripping it off. I also want to make mention the front screen looks a little foggy. Maybe that’s how they were but that’s covering the logo, not the copper that’s to help. If you have any questions please feel free to ask any time. Thank you