Smart Ultrasonic Toothbrush 1. Vibration frequency and low frequency, mage teeth and gums 2. Vibration frequency and intermediate frequency, gentle cleaning, comfortable gums 3. Vibration frequency and high frequency, deep clean every part of the mouth 4. Automatically complete brushing in 45 seconds 5. Cartoon grips, babies dont need to work hard 6. Food-grade silicone material, anti-drop and durable 7. According to the ergonomic design of children's oral cavity, it fits each tooth better and effectivy removes food residues 8. U-shaped brush head, 360-degree oral cleaning 9. Material: PC+silicone 10. Battery capacity: 400mah 11. Power supply: USB charging / built-in lithium battery 12. Motor speed: 48000r/min 13. Acoustic frequency: 8000-20000Hz 14. ion power: 2w 15. Rated power: 5w 16. Applicable age: 6-14 years old 17. Waterproof rating: IPX7 protection