I bought this flosser several months ago for myself. I have been satisfed unitl recently my WP-450 charger stopped working.
I would recommend this to a friend!
Response from waterpik.comBy Waterpik, Product Support, May 14, 2018
We are sorry to hear the unit is not charging. The WP-450 does have a 2 year warranty. We would be happy to assist you with opening a warranty claim. Please call customer service at 1-800-525-2774 Monday through Friday from 7:00am to 5:00pm Mountain time for warranty assistance.
I been using for two months. Very convenient No power cord to deal with. Battery life is outstanding. I use it everyday. I was amazed at how much it cleaned even after I have brushed teeth. Easy to fill and change nozzles for both my wife and I to use.