Product details:

Introducing the AquaSonic Duo Professional Series. Upgraded from the DUO model, the new smart toothbrush set features rechargeable lithium-ion batteries for more use on a single charge. It also features 4 improved modes for a better clean, along with an upgraded UV sanitizing and charging base to remove germs that can remain even after rinsing. These industry leading, dual handle toothbrushes feature an ultrasonic motor that produces 40,000 vibrations per minute. To make sure you're not missing any spots, the built-in smart timer vibrates every 30 seconds to notify you that it's time to clean a new quadrant in your mouth. This model also features 4 improved modes