This is the only sonic toothbrush that reduces brushing time by cleaning the front, back, and top of teeth simultaneously. Its unique triple brush head scrubs a tooth’s entire surface while also reaching below the gumline to prevent tooth decay and massage the gums. The toothbrush’s 45º angled bristles whir back and forth with quiet vibrations at 31,000 times per minute to effectively remove plaque from enamel. It has three modes (high, low, and massage) with varying intensity and a built-in two-minute timer that prevents over brushing. With soft nylon bristles that are safe for use on braces, dentures, and implants. Includes two brush heads. Charging base plugs into AC.