The healthy energy necklace made in Shanghai is good. I, my mother, aunt and uncle all wear it. I don't feel tired when I work. It is difficult for mother to raise her arms and comb her hair. After wearing it for a week, it has improved obviously, and it is much better now. The fan air conditioner on the leg joint won't blow. The hotter summer is, the colder my legs are, the more painful they are, and I feel hot when I wear a necklace. Generally speaking, my family feels ok.