Compare Philips Sonicare 4100 Electric Toothbrush (HX3681

Sonicare technology pulses water gently between your teeth for an expert at-home cleaning, removing more plaque than manual brushingTwo intensity level options allow you to brush gently yet effectivelyTwo-minute SmartTimer with QuadPacer encourages you to brush for the dentist-recommended amount of timeSlim, ergonomic handle design makes it comfortable and easy to holdPressure sensor flashes red to prevent the user from applying too much pressureBrush head replacement reminder alerts you when it's time to switch to a new brush headBuilt-in battery lasts for up to 14 days on one charge, with a battery light indicator for at-a-glance battery checks