[Food-grade material] The brush head of this sonic toothbrush is made of food-grade silicone. The handle is designed to be IPX7 waterproof and easy to clean. Please note that the charging stand is not waterproof[Ergonomic design] The unique U-shaped design fits the gums better than traditional toothbrushes; combined with high-frequency sonic technology, this electric toothbrush can provide better teeth cleaning and oral protection[Wireless charging] It only takes 3 hours to fully charge the toothbrush using the charging stand, and it can be used for a week on a single charge. It is safe and convenient to use at home or on the go[Efficient teeth cleaning] Thanks to its ergonomic design and ultrasonic technology, this automatic toothbrush can complete 360 cleaning in 45 seconds with an automatic timer, eliminating the need to stand by the washbasin for a long time in the early morning[Easy to use] This automatic toothbrush is conveniently designed and can be used with just one press. Long press the button for three seconds to turn on/off the toothbrush, and short press the button to switch cleaning modes: 1. "Powerful mode" for strong brushing; 2. "Medium speed mode" for comfortable brushing; 3. "Massage mode" for gum massage