This electric teeth cleaner adopts real ultrasonic high-frequency vibration technology, the vibration frequency can reach 2 million times/min. Easily remove dental calculus, smoke stains and dental plaque. No noise, no vibration (no vibration in your hand). This plaque remover makes your smile more confident. 3 different intensity adjustment modes to meet your various needs. Comfort mode is suitable for sensitive teeth, Clean mode Suitable for remove the stains caused by coffee, tee,and cigarette, Strong mode Suitable for stubborn and deep stainsand plaque.The dental cleaning kit is equipped with 4 additional removable cleaning heads (2*tip, 2*flat), 1 wrench to remove the cleaning head, and 1 dental mirror to assist in observation. Our calculus remover will only be activated when it touches teeth and hard objects. When it touches soft gums and other soft tissues, it will immediately stop vibrating. 100% safe, even if you use it for the first time, it is suitable for both adults and children. Enjoy professional teeth cleaning at home whenever you want! Making you fall in love with cleaning your teeth. Built-in 1200mAh lithium battery, with USB charging cable, easy to charge with any 5V-1A adapter. 4 hours fast charge, 52 times (5mins/time) can be used, if the use time is too long (more than 10 minutes), the teeth cleaner will automatically shut down to prevent the equipment from overheating. IPX7 waterproof, the whole body can be washed, it is convenient and quick to use.