A3 Premium All-in-One brush head is the only one you need to achieve cleaner, whiter teeth*** & healthier gums. This brush head results in 20x more plaque removal*, up to 100% stain reduction** & up to 15x healthier gums in just 2 weeks** Premium performance Up to 20x more plaque removal even in hard-to-reach areas* Up to 100% more stain removal in less than two days*** Up to 15x healthier gums in just two weeks** Sonic brushing: the masterclass in effective cleaning Designed around you The bristle shape designed for your smile Designed by experts with you in mind Intuitive in every way Click-on design for simple brush head placement Replacement reminders keep you cleaning your best