Clinically proven: Advanced bristle system cleans and polishes for healthy beautiful teeth as recommended by some dentists Runs on 2x AA batteries included and replaceable, floss clean and dual clean facilities - the improved technology delivers more consistent battery performance FlexiSoft bristles gently clean and polish teeth It is clinically proven that the Oral-B Advanced Power cleans better than an ordinary manual toothbrush Interdental tips reach deep between teeth and along the gumline High-speed oscillations, non-slip grip Indicator bristles Indicator bristles colour fades reminding you to replace brush head Includes 2 x AA Duracell batteries (replaceable)