The Pursonic S430 delivers an unparalleled 40,000 sonic brush strokes per minute to remove disease-causing plaque for an enhanced brushing experience. It's simple and easy to use controls offer a selection of 3 brushing modes, normal, soft for sensitive teeth, and massage. The 2-minute timer encourages you to brush for the dentist recommended time, while a 30-second interval timer gently pauses to remind you to thoroughly brush all areas of your mouth.