Power toothbrush smart toothbrush series oral b smart series oral b crossaction oral b pro colour white number of brush heads 4 special feature smartguide pip code 10762952 power type rechargeable operating time 40 min brushing action rotating oscillating pulsating pulsations per minute 40 000 rpm rotations per minute 8 800 rpm functions bluetooth 3d cleaning technology timer charge indicator pressure control cleaning modes 5 cleaning programmes gu