The hum by Colgate Smart Rechargeable Electric Toothbrush offers bluetooth connectivity that tracks the frequency, duration, and coverage of your brushing style.The hum smart toothbrush has a 2-minute built-in timer that pulses every 30 seconds to help you stick with it.Three powerful sonic vibration modes let you customize your brushing needs.This smart toothbrush starter kit comes with one rechargeable electric adult toothbrush, one toothbrush head, one charger, plus a travel case.The hum rechargeable electric toothbrush offers 10 days of battery life.Combines the power of a sonic toothbrush with the connectivity of a smart toothbrush.A travel case makes it easy to take this sonic toothbrush on your next vacation or even to work.