Features: 1. Ultrasonic high-frequency resonance technology, 2 million times per minute resonance, precise crushing of calculus, whitening and protecting teeth, without damaging teeth and gums. 2. It can effectively improve the redness and swelling of the gums, yellow and black teeth, tartar, bad breath, tooth decay, dental plaque and other dental problems. 3. Professional spotlight LED lights can illuminate the entire oral cavity, with a 2 million pixel high-definition lens, so that dental problems are clear at a glance. 4. The three levels can be switched freely to meet the needs of different teeth cleaning and meet the actual needs of different groups of people. 5. Medical grade dental prosthesis needle, stainless steel material, non-rusting and anti-scaling, professional hook design to avoid damage to teeth. 6. Built-in 1200mAh high-capacity battery, which can last up to 60 days after being fully charged, avoiding frequent charging. 7. Visual function: Scan the QR code on the instruction manual, download the WIFI Tooth APP, connect to the mobile phone, and you can view the condition of your teeth on the mobile phone in real time. Specifications: Material: ABS+stainless steel. Color: black. Size: 21.7*3*5.7cm. Weight: 112g. Packing size: 25*8*32cm. Waterproof performance: IPX6. Power supply voltage: 5V/1A. Charging interface: TYPE-C. Charging time: 1.5-2H. Battery: 1200mAh. Battery life time: 3.3H. Rated power: 1.5W. Frequency: 44khz+/-3khz. Rated time: 10 minutes. Auxiliary lighting: 1 spotlight LED light. Control method: button. Working mode: 3 types (low, medium, high). Working environment temperature: -10~50. Packing List: 1* Host. 2* Stainless steel cleaning head. 1* Dental mirror. 1* small wrench. 1* USB Charging Cable. 1* English User Manual.