Get $30 Discount On Electric Toothbrushes At Bestbuy.com. With speeds of up to 31,000 strokes/minute, this toothbrush ensures one will be smiling brighter. Simply follow the built-in Quadpacer timer for deep cleaning in each section of the mouth. The 2 modes with 3 adjustable intensities let one customize the oral health routine. The rechargeable lithium-ion battery delivers steady power for up to 31,000 strokes/minute. The 2 minute timer encourages deep cleaning of the teeth and gum line. The quadpacer tells one when each quadrant of the mouth is complete, so one get consistent results.