The Chinese are trying to enter the market of vibrating electric brushes, like all Chinese ones, they fall short in quality to European or American counterparts made in the same China. The dentist advised Philips or Oral-B, decided to save money (the toad crouched on top, so to speak), but as you know, the miser pays twice. In general, of the two brushes, there is no claim at all to one, the main thing is not to be friends with the lower part of the brush with water for a long time.See full review