Boasting a triple zone cleaning action the oral b tz600 toothbrush will remove 100 more plaque than a manual brush with 7 600 rotations and 20 000 pulsations per minute it boasts a timer so you can keep track of how long youve brushed for featuring an ergonomic handle for comfortable use the rechargeable brush provides 30 minutes of use after a 12 hour charge lm features oral b tz600 toothbrush removes 100 more plaque than a manual brush 7 600 rotations and 20 000 pulsations