I bought a brush on the basis of the principle to try the electric option, and then how it goes. I want to say that after 2 months of using this device, my teeth became a little whiter, and in general, my breath became much fresher. When brushing your teeth, the brush massages your teeth and gums, which feels very pleasant. The oral-b battery is quite capacious, you can not charge the brush for 4-5 days. All in all, a good product for a good price. I advise!See full review