- Ultrasonic technology carefully removes food debris, plaque, and bacteria in areas your toothbrush often misses- It's clinically proven to be 2 times more effective than string floss- With 5 levels of water pressure, you can find the best setting for your gums- The 200 ml water tank holds enough for up to 60 seconds of use- A 1-hour USB-C charge gives you up to 10 minutes of battery life