The Sonicare HX6732 HealthyWhite toothbrush uses patented sonic technology which delivers 31,000 strokes per minute, driving fluid between teeth and along the gumline. The Quadpacer and Smartimer encourage attentive brushing of each quadrant of the mouth and reinforce a recommended brushing time of at least 2 minutes. It includes 2 ProResults brush heads (Standard and Compact). There are 3 cleaning modes: Clean is the standard mode for superior cleaning, Sensitive is gentle cleaning for sensitive gums, and Clean and White which gives 2 minutes of standard brushing with an additional 30 seconds of white mode. The HX6732 is ideal for travel with a detachable travel charger and Universal Voltage. 2-year warranty.