Food-grade materials: This electric toothbrush is made of safe materials. The automatic brush head uses soft, food-grade silicone bristles for a more comfortable massage experience. Deep cleaning: With ultrasonic technology, it cleans teeth 360 degrees and performs a thorough brushing in just 10-15 seconds. Each brushing provides a quick and comfortable experience for your mouth. U-shaped design: Automatic foaming and cleaning with a U-shaped silicone brush head eliminates the need for hands. The brush head's design conforms to the human bite principle, achieving 360-degree all-around cleaning, freeing your hands and improving efficiency. 4 operating modes: A. Powerful mode for powerful cleaning; B. Comfort mode (recommended for first-time users) for comfortable brushing; C. Massage mode for massaging gums; D. Whitening mode for whitening teeth and promoting gum blood circulation. Waterproof and reusable: Waterproof, washable, and reusable, ensuring oral health. Ergonomically designed for quick cleaning of both the surface and inside of the teeth. Enjoy brushing easily and safely even in the shower.