this review title is: water flosser not professional and the content is: the pictures said everything not a good quality or easy to charge flosser i bought of them and after a week one of them stop working they are not well insulated or the flosser was defective i opened the flosser because i am a curious person and i found out that the parts inside were all wet.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.