1. With ultrasonic motor, 400 vibrations per second
2. 360°U-shaped brush head, easy to clean to the inside of teeth
3. With cold light whitening technology
4. Grade 7 waterproof, the whole body can be washed
5. Three levels of sound waves can be adjusted
6. Long battery life
7. Dimensions: 60x25x110 mm
8. Weight: 0.23 kg