Features     1. Micro induction ultrasonic technology -magnetic levitation cleaning power system. During ultrasonic work, only when the working tip touches hard objects such as teeth and dental stones will it vibrate, and soft objects such as gums will stop vibrating (to protect gums);   2. You will not feel any vibrationwhen holding the handle. The burning phenomenon during operation is normal. Please be careful not to touch the gums for a long time;   3. Effective for tobacco stains, tea stains, dental plaque, stubborn teeth stones;   4. IPX6 full body waterproof, super long service life;   5. The LED lamp is integrated into the fuselage,with the design of working head light, itis convenient and simple to use. It illuminates the bacteria in the blind area of vision, which can quickly find the problems in the mouth and effectively deal with them.   6. Ultrasonic transducer, 31000/min ultra-high frequency vibration tooth cleaning stone, comfortable and effective;   7. Medical grade working tip,quality304 stainless steel. Fineworking tip is suitable for cleaning between the teeth, frosted flat head working tip is suitable for cleaning stubborn stains on the tooth surface;   8. 5 modes are optional, and mode switching can be realized by touching them twice.   Specifications   Color: black   Material: ABS+stainless steel   Size:35*200MM   Rated voltage:5V   Rated power:3W   Vibration frequency:30-40KHZ   Battery capacity : 2500mah   Charging hour: 1h   Operating time: 6h   Charging method: USB Magnetic Charge   Package list   1* Ultrasonic Calculus Remover   3* Work Tips   1* Charging Cord   1* Dental Mirror   1* Mini Wrench   1* User Manual