Philips Sonicares patented sonic technology drives fluid between the teeth and along the gum line to give better plaque removal than a manual toothbrush. The ProResults brush head provides outstanding plaque removal whilst the two minute Quadpacer interval timer encourages thorough and better brushing. Sonicare electric brushes are clinically proven to improve gum health in just two weeks. It cleans along the gum line, removing plaque while stimulating gums. Model number: HX6511/50. Timer for better brushing. Quadpacer timer encourages attentive brushing of each quadrant of the mouth. 1 cleaning mode: . 1 brush head: ProResults Standard brush head. 1 speed setting. 31,000 pulsations per minute. Sonic technology for naturally whiter teeth. Ergonomic handle - to make the brush more comfortable to hold and use. Recharge indicator light. Rechargeable: 24 hours for full charge. 84 minutes usage time, based on 2 minutes twice a day. 2-pin adaptor. General information: Li-Ion . Manufacturers 2 year guarantee.