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: ABS Color: Green Size: 21.5*2.5*2.5cm Weight: 0.19kg Packing size: 24.5*10*3.5cm Charging method: USB interface Battery: Lithium battery Rated voltage: 3.7V Rated current: 200mA Power adapter: 5V Vibration frequency: 22000 times/min Charging time: about 2H Waterproof rating: IPX6 Packing List: 1 x Host 1 x Pointed head 1 x Flat head 1 x Dental mirror 3 x Toothbrush head 1 x USB Charging Cable 1 x English User Manual