Sincere Service: Your product will enjoy a one-year hassle-free warranty service, if you have any questions about the product, please feel free to contact us. Convenient Operation: Press the power button to wake up the device and the light, then select the corresponding mode. USB Charging and Waterproof: The Kit for Type-C charging port and 1500mAh large capacity battery.The device is waterproof and can be cleaned directly with water, so you can easily carry it on the go. 5 Cleaning Modes: With the button you can freely choose the cleaning mode , suitable for teenagers, adults and seniors. Plaque Remover for Teeth kit: Comes with 3 replaceable cleaning brush heads. Suitable for removing plaque, coffee stains, food residue, etc.