Ring of pure copper (99.9%), 100% hypoallergenic, no alloy or brass, with a transparent coating. With 2 neodymium magnets with a strength above 2500 gauss. We use a special non-toxic transparent coating on our copper rings to slow down the rate at which they develop patina. The best place to wear your ring is on the finger, in direct contact with your skin. You can test for yourself whether the left or right finger works better: otherwise, switch to the other hand. There are no disadvantages to wearing copper magnetic rings for a long time. Avoid exposure to magnets when using a pacemaker, defibrillator, insulin pump, or aortic infusion pump, as magnets could affect the operation of some equipment. Copper magnetic rings are not medical devices and are not intended to replace medical treatments. If you have serious, acute, or chronic health problems, cons...