1. Fully charge the toothbrush. Please place the main unit vertically on the charging dock and when charging, the fuselage LED glittering, full of light. 2. Apply toothpaste evenly on the U-shaped brush head. 3. Put the brush head into your mouth, relax your bite on the brush head, and select the right frequency mode. 4. Easily brush your teeth, and move your brush back and forth, left to right with your hands at the same time, brushes your teeth for a deeper clean. If you find the mouth piece too small, move it further left and right, up and downfor a a greater reach. Please do not charge in wet conditions, always dry the device before charging. Fully automated high frequency ultrasonic cleaning, swing up and down to clean the teeth dirt. U-shaped silicone brush head can wrap the teeth 360 for comprehensive cleaning of teeth, designed for adults. Removable toothbrush head, recommended to wash with boiling water after a period of use. Note: This toothbrush is used for micro cleaning and whitening, not to replace your daily brushing but to compliment for a deeper clean. New generation toothbrush meet all teeth cleaning needs. It is recommended to use with foam toothpaste. The electric toothbrush is fully washable, safe and convenient to use while taking a bath or shower. With wireless charging base, USB port supports multi charging ways. 1 hours charge for at least 7 days use. Automatically turns off after 45 seconds of each tooth brushing. Brush your teeth scientifically to protect your teeth. How to use u shaped toothbrush? Ultrasonic Automatic Toothbrush 4 Brushing Modes IPX7 Waterproof Fast Charging 45 Seconds Smart Timer