stopped working after 5 months. It was great up until then
broke after 5 months. In the process of trying to figure out how to return it to China!! the return window is closed. Looks like I got screwed .  UPDATE:  I contacted the seller and they sent me a new one free of charge! Didn't even have to send the old one back.  This is an incredible flosser,compared to others that I've had this one is great. I don't know why it stopped working, but I'm gonna assume that it was just a fluke. Customer service was fantastic! And my dental checkups show improvement since using it.
Rating: 4 stars