1. Sound waves contact soft tissues such as gums to generate ultrasonic frequencies, high-frequency cleaning, safe and not hurting teeth 2. High-definition mobile phone APP display, visual four-axis gyroscope, 360-degree teeth cleaning 3. Stainless steel material, no damage to the mouth, no rust, durable 4. Hook-shaped cleaning head, the arc is more suitable, suitable for removing tartar and calculus 5. Auxiliary lighting: 6 spotlight LED lights 6. Pixel: 200W 7. Rated power: 2W 8. Input voltage: 5V 9. Battery capacity: 500mAh 10. Charging time: about 2-3h 11. Use time: about 120min 12. Material: ABS 13. Weight: about 86 14. Size: about 20.8 x 2.58cm