Removes up to 6x more plaque than a manual toothbrush to help prevent tooth decay and avoid cavitiesPatented sonic technology delivers up to 31,000 brush strokes per minuteTwo-minute timer helps ensure recommended brushing timeEasy-start feature slowly increases power over first 14 uses making the switch to Philips Sonicare easyTwo-color battery charge indicator lets you know when to recharge. 2 weeks battery life.