The Sonicare PowerUp Battery Toothbrush is designed to be as easy to use as your manual, while delivering superior results and a better experience. With more brush strokes in a day than your manual in a month, PowerUp removes more plaque, helps reduce cavities and helps whiten teeth. Clinically proven safe, gentle and offers guaranteed better-check-ups or your money back. Better check-ups: Sonic Technology removes more plaque than a manual toothbrush. Helps reduce cavities and whitens teeth. 2 minute timer helps ensure recommended brushing time. 2 AA Batteries Included (trial batteries included, best with Polaroid AA batteries).