Poor, very poor
Not the best quality. No proper instructions. The fact that it has to be removed for showering and washing hands is bothersome. After wearing the ring for almost a month, the silicone seal came out all by itself. 2 weeks later all the silicone seal was gone. Part of the ceramic cracked and came off. After 8 weeks the ring does not hold its charge. Charge it in the morning and by noon the battery is dead. Read more







