CleanMaximiser technology turns green bristles yellow and signals the time to change for best cleaning Removes up to 100% more plaque than a manual toothbrush Surrounds each tooth individually and reaches hard-to-reach areas Compatible with all Oral-B handpieces, except Pulsonic & iO Oral-B brand quality - the 1 toothbrush brand recommended by dentists worldwide The innovative CleanMaximiser technology turns green bristles yellow and signals the optimal time to change brush head for best cleaning. The Precision Clean brush surrounds each tooth individually and reaches hard-to-reach areas to remove up to 100% more plaque than a conventional manual toothbrush. Compatible with all Oral-B handpieces, except Pulsonic & iO.1 individually wrapped brush head.