My 4-year-old daughter can test the special limited edition of the Advance Power Kids under a trnd project and is very enthusiastic. The design of the toothbrush is designed for children attractively designed (Mickey Mouse) and it fits comfortably in small hands. The melody to sound after a certain time and indicating to clean the zone switch is a great fun for my daughter. Through the brush head and small / narrow spaces in children's mouth easily be reached. Thanks to the new toothbrush she brushing her teeth still prefer :).