1. With ultrasonic motor, 400 vibrations per second 2. 360-degree U-shaped brush head, easy to clean to the inside of the teeth 3. With cold light whitening technology 4. Level 7 waterproof, body washable 5. Three sound waves can be adjusted 6. Lithium battery capacity 400mAh, long battery life 7. Dimensions: 60x25x110mm 8. Weight: 0.32kg
