Ergonomic design, comfortable grip, one-key on, four-level key mode, one-level turn on lighting, two-level start vibration mode, three-level turn off light, vibration function works normally, four-level shutdown. High-intensity and strong-light LED lamp design, strong light illumination, can be effectively and accurately cleaned, leaving no dead ends. Five working heads, G1 alloy steel tooth cleaning head, tongue coating brush, P1 pointed soft grinding head, P2 conical soft grinding head, to meet various oral care needs. The working head can be washed, and it can be cleaned in one flush, so the worry is so easy, the host and the base cannot be washed. High frequency vibration, 15000 high speed sonic vibrations per minute, easily remove stains, polish teeth, massage gums. The main body of this product is made of ABS, and the working head is made of environmentally friendly PP + 303 alloy steel. The sound wave vibration and light guide generates flowing cleansing power, penetrates the mouth, and deep cleans. The five customized function heads can easily remove gums, calculus, tea stains, and smoke stains. Effectively remove bacterial stains between the tongue and nipples, polish the surface and corners of the teeth to make them smooth and white. If you want to change the work head, you can change it for efficient cleaning. This product can only work with a 3A battery. When you use it, the working tip is in vertical contact. On the teeth, do not press hard, and slowly remove it back and forth, and hold it for about 10 seconds in a position. When the working tip slightly swings on the teeth with a squeak resonance, slowly move to the location of the calculus and stay for about 10, Just repeat this procedure. 3A battery are not include!