How to Use Ultrasonic Toothbrush 1. Fully charge the toothbrush. The charging position is inside the circular silica gel at the back of the toothbrush.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. How to Use Ultrasonic Toothbrush 1. Fully charge the toothbrush. The charging position is inside the circular silica gel at the back of the toothbrush.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. 45 Seconds Timing Auto turns off after 45 seconds of each tooth brushing. Brush your teeth scientifically to protect whiten teeth. 4 Working Modes Developed with 4 cleaning modes satisfy needs for different conditions of teeth and gums. IPX7 Waterproof Electric teeth whitening brush full body IPX7 waterproof and one-button-operation, it is safe and durable, be used at ease. U shaped brush head designed for adults mouth, conforms to the shape of the occlusal area of the teeth, cleaning tooth surface and internal orientation and can more effectively clean and whiten teeth. 360 degree auto ultrasonic cleaning, free your hands briefly, with 5000-15000Hz vibration per minute. Note: 1. This automatic toothbrush is used for assist cleaning and whitening, not to replace your daily brushing but to compliment for a deeper clean. 2. After brushing your teeth, please remove the accumulated water from the toothbrush with a wet cloth and put it in a dry place. Clean the brush head regularly with boiling water. Toothbrush Holders U Shaped Toothbrush Adults, Black U Shaped Toothbrush Adults, White Electric Whole Mouth Toothbrush, Green Electric Whole Mouth Toothbrush, White Buying Options Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.5 out of 5 stars 32 3.4 out of 5 stars 919 3.4 out of 5 stars 919 3.3 out of 5 stars 337 3.3 out of 5 stars 337 Price — no data $25.99$25.99 $25.99$25.99 $26.99$26.99 $26.99$26.99 Charging Mode USB Charging USB Charging USB Charging Wireless Charging Wireless Charging Smart Timing Time 3 minutes 45 seconds 45 seconds 45 seconds 45 seconds Function Drying Whitening Whitening Whitening Whitening Machine Outsourcing Material ABS Silica Gel Silica Gel Silica Gel Silica Gel