Ultrasonic Electric Tooth Cleaner Dental Scaler

【40 kHz High-Efficiency Plaque Remover】: Electric teeth cleaner adopts the powerful technology (frequency: up to 40 kHz) Which can effectively remove dental plaque, tartar, and teeth stains. (NOTE: The handle will not vibrate and also without working sound. When you press the low/ mid/ high mode and working mode at the same time, use it on your teeth or hard objects and you will feel it working). 【So Safe For Your Gums】: The dental calculus remover is activated only when the cleaning head touches teeth or hard objects, and it will stop vibrate automatically when it touches soft gums. It is helpful to avoid toothache and gum illness, and also protect your gums, friendly to beginners. 【How to Use】: Firstly, tighten (must tightened) the cleaning head and clean it before use, then short press the button can open and switch mode, the "Work" and"Mode" lights are on at the same time, touching teeth or hard objects and start to work. 【User-Friendly Design】: The electric plaque remover for teeth features 2 types of stainless steel replacement heads and 3 settings modes suitable for all cleaning needs. Food-grade ABS material for non-slip easy-grip. IPX6 grade waterproof can be washed directly with water, safe and convenient. It is powered by USB (no more than 5V, 2A) and more than 2 hours of continuous use with one full charge. It is recommended to charge at least every two months.