You can buy the Waterpik Power Flosser on Amazon. I had one Hummingbird that served me for a few years until the motor went dead last year. To use this third-party content we need your approval to share your data with them. Much more so if the company in question is a multinational. I am sad to have to give up on it.
Waterpik Power Flossers are clinically proven as effective as dental floss plus they reduce bleeding gums, inflammation, and plaque.
Searched for a replacement motor and the best I could get was a 3V motor of similar dimensions that I have replaced last weekend. You may find a few used models for sale at a good price, but those who have new units are commanding a premium as they are now very difficult to get hold of.