Review on Electric toothbrush Oral-B Smart 4 4900, black/pink by Riko Doi ᠌

The bluetooth function is useless, it cleans teeth with a smartphone so that it shows when it is necessary to clean this or that quarter of the jaw . a strange occupation. And the brush vibrates every 30 seconds, so even without the application it is clear when and which quarter to clean. Pros: Cleans well. You can't do this with a regular brush. I charge once every two weeks. Has some cons As for me, the surface of the brush is too small, it is more customary to use an oblong one, and not a small round one, but there seem to be other nozzles.