I had issues with my ring in the beginning but it seems to be doing better. It is not perfect but I really don't want to be without it, HOWEVER, Customer service was supposed to send me replacement screws months ago and none arrived. I've put an online request and get nothing. No one seems to know or have the screws. These screws are tiny and it is almost impossible to put them in after recharging the batteries. The design is horrible to have to keep recharging. I would give a better star rating if they would just do some customer service.