Specification:Item Type: Electric ToothbrushMaterial: ABSWaterproof Grade: IPX7nBuilt-in Lithium Ion Battery: 1450mAh (shipped with built-in battery)nHow to Use:1. Select the toothbrush head to insert downward into the host. It is normal to have a small clearance in the middle, and a small hole on the brush head is the front.2. After pressing the on button, you can choose three modes which is comfortable, which will automatically shut down after 2 minutes of working time, and the working mode before shutdown will be remembered when you start up again.3. Apply appropriate amount of toothpaste to the toothbrush head, soak it into your mouth, and then start the toothbrush bristles at a 45 degree angle with the gum. 4. Dentists recommend dividing the mouth into four areas, one area every 30 seconds or so, every two minutes. Rinse your mouth with water and the head after brushing.Package List:1 xElectric Toothbrush2 x Brush Heads1 x USB Cable