Good U-shaped brush head: the soft U-shaped brush head of the toothbrush is made of reliable silicone, 360 degrees of brushing and scaling, transparent and odourless, tough and wear-resistant; these bristles will not harm the gums, designed for children's delicate and sensitive teeth 3 smart modes: the automatic toothbrush has 3 different smart cleaning modes to meet cover the whole tooth, sonic scaling 18,000 times per minute, different frequencies, diverse and powerful, care for oral health, remove stubborn stains, whiten teeth,also suitable for sensitive gums, promote blood circulation around the gums; we recommend adjusting the mode from small to large according to the age of the child Cute cartoon design: the automatic timer toothbrush for children can add to the fun of brushing, with moving and cute music to help your child willing to brush longer and develop proper brushing habits USB rechargeable and IPX7: The USB rechargeable storage ultrasonic automatic toothbrush lasts 360 hours and usually only needs to be recharged once every half month, making it suitable for a variety of scenarios and easy to carry; with IPX7 technology,children can brush their teeth while taking a bath 45 second timer control: This automatic toothbrush with 45 second timer teaches your child to brush at the recommended time; it takes only 45 seconds to complete a 360 degree brushing action for a more scientific and comprehensive dental cleaning, while helping your child to develop good brushing habits and reduce the incidence of tooth decay