Philips Sonicare C3 Premium Plaque Defence Replacement Toothbrush Heads are designed to remove up to 10 times more plaque than a manual toothbrush with specially contoured bristles that adapt to the unique shape of your teeth and gums. Featuring BrushSync technology, these heads pair with compatible Sonicare handles to automatically select the optimal cleaning mode. The flexible sides provide gentle yet effective cleaning, even in hard-to-reach areas. With a sleek black design, these heads add a modern look to your Sonicare toothbrush setup and are compatible with all Philips Sonicare click-on handles.