Oral B Electric Toothbrush ProfessionalCare 6500. Experience a better way of brushing with the Oral-B ProfessionalCare 6500 Series, designed to clean effectively in three brushing dimensions at once. Its unique action combines pulsations with the technology of oscillations-rotations, which Oral-B is a pioneer, to reduce plaque and gingivitis more effectively than a manual toothbrush. A completely independent study has concluded that "Brushes that worked with oscillation-rotation removed more plaque and reduced gingivitis more effectively than manual brushes in the short and long term? No other powered brush designs were superior ..." Clinically Proven Benefits Cleaner better than a manual toothbrush + Improving the health of your gums by eliminating the effects of gingivitis + Removes stains + Helps prevent gum disease, the first reason for tooth loss + As gentle on your teeth and gums as a soft manual toothbrush + Product Features The Unique 3D brushing action cleans by combining two distinct brushing motions, pulsations and oscillations. The movements from the inside out (20,000 per minute) reach deep to loosen plaque, while the rocking motion from side to side (7,600 per minute) removed quickly + Green bristles Oral-B ® FlexiSoft ® are curved slightly in contact with water to get something as soft as a soft manual toothbrush + Indicator bristles Oral-B ® Indicator ®, the bristles are bent by half when the cleaning head must be replaced & Pressure sensor (Pressure sensor) stops pulsations if you're brushing too hard + The memory of time sends a signal after two minutes, brushing time recommended by professional + Mango slip Mango + water resistant + Fully charged handle lasts up to 7 days between charges