Batteries included. Congratulations on choosing a Zooth Power Brush! We designed the Zooth Power Brush with extra care to help motivate kids to brush regularly. At Zooth we add the character. Zooth makes healthy fun. Soft moving bristles. Brush heads are not replaceable. This product has been designed to make brushing fun and should not be used as a toy or without adult supervision. Dentists recommend replacing your toothbrush every 3 months. Made in China.