Features:1 Effective cleaningThis ultrasonic dental scaler uses high-frequency sound waves (31,000 times per minute) to clean your teeth and freshen your breath, which is an indispensable helper for oral care 2 Five-speed modeThe five-speed mode is suitable for different tooth conditions and meets the needs of different groups of people One key can switch modes, simple and fast 3 Significant effecteffectively remove dental plaque, dental calculus, yellow teeth, bad breath, tobacco stains, and improve oral problems 4 Multiple accessoriesThree replaceable toothbrush heads can be used for daily tooth cleaning, and two high-quality medical grade alloy steel replacement heads can be used to remove tartar, tea stains, and smoke stains 5 USB chargingUSB universal interface, can be connected to mobile power,computers and many other digital products for charging, long-lasting battery life, convenient for you to use anytime, anywhere Specifications:Material: ABSSize: 21 5*2 5*2 5cmWeight: 0 19kgPacking size: 24 5*10*3 5cmCharging method: USB interfaceBattery: Lithium batteryRated voltage:3 7VRated current: 200mAPower adapter: 5VVibration frequency: 22000 times/minCharging time: about 2HWaterproof rating: IPX6 Packing List:1* Host1* Frosting head1* Flat head1* Dental mirror3* Toothbrush head1* USB Charging Cable1* English User Manual