Includes one (1) hum by Colgate Smart Rechargeable Electric Toothbrush Kit in Black The hum by Colgate uses bluetooth connectivity to track the frequency, duration, and coverage of your brushing style A 2-minute timer built into the electric toothbrush pulses every 30 seconds to help you stick with the recommended brush time Customize your brushing with three powerful sonic vibration modes on this hum toothbrush Combines the power of a sonic toothbrush with the connectivity of a smart toothbrush Combines the power of a sonic toothbrush with the connectivity of a smart toothbrush. Bought a few years ago but never opened or used.