U-shaped Beauty Instrument Ultrasonic Vibration Tooth USB Charging Children Electric Toothbrush 1. Different sizes are made according to different ages of children, each tooth is covered with soft liquid silicone bristles 2. Three modes (gentle massage, gentle cleaning, deep cleaning), one-button switching 3. Intelligent timing, shake left and right every day, complete a brushing in 45 seconds, scientific brushing time 4. Sonic teeth cleaning, micro-shock gum protection 5. Mini body, baby can hold in one hand 6. Ultraviolet sterilization, equipped with 406 nanometer ultraviolet light, sterilization without peculiar smell, effectively preventing the growth of bacteria 7. 8. 360 degree cleaning, smart cleaning, sonic vibration, food grade silicone 9. Material: food grade silicone + PP 10. Rated power: 5w 11. Rated voltage: 3.7v 12. Charging time: about 120 minutes 13. Applicable age: 3-7 years old, 8-15 years old, IPX7 waterproof protection, easy to wash; heat and high temperature resistance 14. Power supply mode: USB charging lithium battery included 15. Battery capacity: 500mah 16. Size: Toddler Brush Head: 4 x 3.8 x 1.2 cm, Child Brush Head: 5 x 4.4x 1.4 cm 17. Weight: about 225 g