Philips Sonicare 3100 Electric ToothbrushElectric toothbrush for adults that provides effective oral health: achieve up to 3 x more plaque removal along the gumline with the C1 ProResults brush head Gentle yet effective cleaning with Advanced Sonic Technology that pulses fluid between teeth and along the gumline, with a cleaning power of 62,000 bristle movements per minute Safe and gentle: if you apply too much pressure, the handle will pulse slightly, reminding you to ease off the pressure,