The hum by Colgate Rechargeable Smart Toothbrush for adults with blue tooth connectivity guides you to brush better by tracking the frequency, duration, and coverage of your individual brushing style to help you target spots that need extra love. With a brush that knows you and an app that shows you, hum sonic electric toothbrush makes seriously good oral care something to smile about with fun activities and challenges that help you improve your brushing while earning points toward rewards. Go beyond the guesswork with our soft bristle toothbrush!