This is the sonic toothbrush used by dental professionals because it is 98.75% more effective at removing plaque and 92.66% more effective at improving gum health than a traditional toothbrush. Unlike a common manual brush that requires repetitive wrist labor with lackluster results, this unit removes plaque from tooth enamel with quiet vibrations that whir back and forth 31,000 times per minute to help prevent tooth decay and gently massage the gums. A lower speed setting reduces the vibrations to 22,000 per minute and a vented brush cover allows water vapor to escape to help keep the brush head dry between uses. A full charge via its stand provides power for 30 brushing sessions and a built-in timer prevents over brushing. Includes three brush heads with two hygienic covers and travel case. Charging base plugs into AC. 10" H x 1 1/4" Diam. (8 oz.)