Protect your gums with the oral b pro smartseries 4000 bluetooth 3d white toothbrush pressure control reduces brushing speed and alerts you if you brush too hard know you brush the right amount of time with the 2min professional timer 3 brushing modes including daily clean whitening and sensitive better brushing results with real time feedback thanks to bluetooth connectivity and the oral b app oral b pro smartseries 4000 bluetooth 3d white toothbrush is compatible with the following r