luelli ultrasonic dental calculus remover About this item High Efficiency: Dental plaque remover tool using real high-frequency vibration technology. Compared to manual dental tools, this dental tool can effectively. Safe Protect Your Gums: This electric teeth cleaning kit only works on teeth or hard objects, stop vibrating when touching gums and soft skins. We suggest you charge it fully and try it on a hard object first. Rechargeable LED: The teeth tarter cleaner is powered by Type C USB and has a built-in 1500mAh rechargeable battery, it is convenient to charge anytime. LED light and dental mouth mirror help you find calculus in your teeth more easily and remove them efficiently. Waterproof: The dental calculus remover can be washed directly with water, which is more convenient and hygienic.