Remove up to 10x more plaque than a manual toothbrush: experience deep cleaning with a soft-touch brush head back that enhances the bristle motion for increased coverage and more thorough cleaning Achieve up to 100% more stain removal in 3 days²: the deep clean brush head uses a cluster of dense, stiff bristles in pentagonal shape at its centre to whiten and polish your teeth Proven Sonicare technology cleans gently yet effectively with up to 62,000 bristle movements; dynamic fluid action supports cleaning by driving fluid deep between teeth and along the gumline Click-on design: Philips Sonicare C3 Premium Plaque Defence brush heads fit all Philips Sonicare handles⁵ You'll know when it's time to change the brush head thanks to BrushSync replacement reminder (compatible handles) that tracks how often and how hard you brush, and when blue bristles turn white 70% of the plastic in this brush head is bio-based³; paper-based recyclable packaging⁴ The set includes: 4x C3 Premium Plaque Defence brush heads, black