this review title is: years of use and still going strong and the content is: my dentist wanted me to get an ultrasonic toothbrush but i did not want to pay a lot for it i thought this one would be a great trial at less than i like it and it has worked well for more than years i have not had problems with water but then again i do not drown my toothbrushes with water.there are other information for this review, one is this reviewer did not purchase it and the other is 1 people think this review is helpful.