Descriptions:   Color: Black   Style: Tooth scaler set 1, Tooth scaler set 2,Tooth scaler set 3,3Pcs Replacement head   Material: Silicone, plastic, stainless steel   Function: LED irradiation, high frequency vibration, cleaning tooth stains, oral cleaning   Mode: STRONG, NORMAL, SOFT   Vibration frequency: 20000/min   Waterproof rating: IPX6   Battery capacity: 300ma   Charging time: 120 minutes   Use time: 60 minutes   Charging method: USB cable   Boot mode: long press for 3 seconds   Tooth scaler size: 23*2*2cm   Replacement head size:7.5*1.2*1.2cm   Package Contents:   -Tooth scaler set 1   1Pcs* Dental scaler host   1Pcs* Replacement heads   1Pcs* English manual   1Pcs* USB cable   -Tooth scaler set 2   1Pcs* Dental scaler host   4Pcs* Replacement heads   1Pcs* English manual   1Pcs* USB cable   Features:   High-frequency vibration technology: Clean tooth stains through ultrasonic vibration, and solve most problems such as tooth integral and dental bacterial plaque. The electric tooth calculus can be operated manually to gently remove the calculus.   3 Adjustable modes: 3 adjustable intensity modes (10000-20000 times per minute), suitable for different gum sensitivity. Easy to start from low to high level.   Charging portable: with USB charging cable, convenient to use any mobile phone adapter to charge. Portable and compact, it is convenient to travel and carry on business trips.   Home dental care: The use of removers in current dental care procedures will reduce the level of bacteria in the oral cavity, resulting in fresh breath.