The Oral-B iO series with the revolutionary iO technology, combines the powerful but gentle micro vibrations with the unique round head of Oral-B for professional cleaning every day. The internal mechanism works with magnetic movements without friction & noise, transferring micro vibrations to the ends of the bristles of the brush head for an excellent cleaning.  Definitely, when you change from the manual toothbrush to the electric one, you are upgrading the cleaning of your teeth. However, when you switch from an electric toothbrush to iO, your experience goes beyond all bounds and becomes a great cleaning experience, with a completely different look, sound and feel.