Feature: 1. One key to start without any tedious process, which is easy and convenient for kids to use. 2. Small brush head flexible cleaning blind area of the mouth and the back brush designed to effective cleaning tongue coating. 3. Each of the brush hair is soft, can gently clean the dirt between the teeth, while protecting the baby's delicate gums. 4. Kids electric toothbrushes are IPX7 waterproof and can be washed directly in water. 5. With cute cartoon patterns, which will make your kids fall in love with toothbrushing. How to Use: 1. Buy a AA battery. 2. The positive electrode is downward, and the negative electrode is upward loaded into the battery slot of the main engine. 3. Align the battery back cover upward with the big and small button points on the upper cover, and turn it to the right until closed. Then it can be used after starting up. Specification: Item Type: Kids Electric Toothbrush Material: ABS Model: W7 Rated Voltage: 1.5V Waterproof Grade: IPX7 Battery Type: 1 x AA Battery (Not Included) Package List: 1 x Electric Toothbrush