I have heard that everything is all right with it, but it is not as advertised as before. If you need more information about the coin, you could search online. I have heard that it is something related to medicine, and maybe this is why people don't usually talk about it. It is dangerous to put your health in the hands of the online area. I know it because I once tested my hearing on an app, and it said that everything was alright. I then went to a concert, and suddenly, I started hearing some bad noises in my ear. I was lucky that I had an audiologist near me because he was the one that saved my hearing. That's why I don't trust any platform anymore.