Sometimes, when you say amazing...it could resonate with unbelievable and not real. But it's real, it solve in few minutes a old and bad pain with my shoulder. I've also tested with a pain with my lower abdomen: it's working very well. My wife tested with a shoulder pain: it works again. As I'm an retired Electronic Engineer, I understand the operating mode and validate it in concept mode and in real life mode. Many thanks & kind regards from France (the only think to improve is the shipping cost to Europe, which is close to be equal to the product price).

Michel