1. Funny reward mechanism, patented voice bank and music library, help the kids fall in love with brushing teeth. 2. Special vibration intensity and frequency for kids to avoid hurt to young teeth and gums. 3. Special DuPont soft brush head for kids, be round to avoid hurts. The changeable color helps to remind replacement. 4. Three models of brushing: gentle, common and strong 5. Having child safety lock to prevent children from misoperation 6. Automatically brushing up and down and the kids will get the hang of the healthy Bass method without learning. 7. 15° inclination of ergonomic shape, more comfortable, more convenient and 360° cleaning thoroughly 8. The brush head is made of imported food grade PP 9. Built-in high-qualtiy rechargeable Li-ion battery. 10. 2-minute interval timer and the smart quarter interval timer 11. USB, wireless charging, available for global travel charging 12. Three seconds for anti-shaking off toothpaste 13. Provide patterns customization.