REMOVES UP TO 10X MORE PLAQUE THAN A MANUAL TOOTHBRUSH - Enjoy a thorough clean with a soft-touch brushing head that improves bristle movement for greater coverage and deeper clean REMOVES UP TO 100% MORE DENTAL STAINS IN THREE DAYS² - The deep cleaning head uses a group of dense, stiff pentagonal bristles in its center to whiten and brighten teeth Sonicare's proven technology gently but effectively cleans with up to 62,000 bristle movements. Dynamic fluid action facilitates cleaning by directing fluid between teeth and along the gum line ONE CLICK MOUNT DESIGN - Philips Sonicare C3 Premium Plaque Defence brush heads fit all Philips Sonicare⁵ handles. You'll know when it's time to change your brush head thanks to the BrushSync replacement reminder (compatible handles), which tracks brushing frequency and intensity, and blue bristles that turn white 70% of the plastic in this brush head is bio-based³ and the packaging is recyclable paper⁴ Set includes 4 C3 Premium Plaque Defence Brush Heads in Black