Electric toothbrush for adults providing effective oral health: helps whiten teeth from day 1 with the W2 Optimal White brush head Gentle yet effective cleaning with Advanced Sonic Technology pulsing fluid between teeth and along the gumline Safe and gentle: if you apply too much pressure, the handle will pulse slightly, reminding you to ease off the pressure, thereby protecting your teeth and gums EasyStart for a gradual, gentle increase in brushing power; SmarTimer informs you when you've reached 2 minutes; and QuadPacer allows for better brushing compliance #1 dental professional-recommended sonic toothbrush brand worldwide²: benefit from Philips expertise to keep your teeth and gums in the best condition The set includes: 1 x Philips Sonicare 4100 sonic electric toothbrush, 1 x W2 Optimal White brush head, 1 x charger