Compatible with ALL Philips Sonicare handles, including DiamondClean and ProtectiveClean. Achieve 7x healthier gums in just 2 weeks vs a manual toothbrush. Extra-soft edge bristles target plaque along the gum line. Philips premium adaptive cleaning technology's soft, flexible rubber sides adapt to the unique contours of your gums absorbing excess brushing pressure. BrushSync technology ensuring compatibility with a BrushSync enabled Philips Sonicare electric toothbrush.