Efficient calculus remover: electric calculus remover, with high-frequency vibration technology, can effectively separate dental plaque, calculus and stains, and easily remove hard tartar on teeth.High-quality and safe materials: alloy steel and food-grade silicone, non-slip and easy to scratch, tartar remover is safer for teeth and gums.A variety of tartar removers: Each button has an identifiable function, which can simplify your operation and automatically select the last off mode when it is turned on.USB rechargeable: safe and fast charging via USB, convenient for charging at any time.Effective cleaning: The tip of the surface cleaning head is flat and can clean the surface of the tooth without causing damage.