Vibration technology: Ultrasonic technology, 31,000times /min per minute high-intensity frequency, effectively crush stubborn calculus, reduce artificial tooth enamel and gum damage. How to distinguish true and false ultrasound Truly Safe Ultrasound: (1. It will resonate when it touches hard objects, and it will stop automatically when it touches soft gums. 2.No noise) Fake Ultrasound:(1. Pure physical vibration. 2. Loud noise) USB rechargeable: USB safe and fast charging. It can be used about 20 times per charge, so there is no need to worry about power loss when traveling. More flexible and safer to use: This tooth cleaning tool is equipped with an LED high-definition screen, an auxiliary LED light and a silicone handle. It has an intelligent memory function and automatically selects the last closed mode when it is turned on. The frequency can be adjusted in 4 levels to remove stubborn calculus, tartar and tooth stains. Automatic power failure after full charge, automatic protection and energy saving. ĽEASY-TO-USE METHOD First with dental tools Go back and forth in a tiny area for a few passes and wait until you get used to the feeling. Then slowly increase the intensity to find the level that works best for you. 2 different shapes of 304 stainless steel cleaning heads for different parts of the teeth. Ľ5 ADJUSTABLE MODES PERSMAX Plaque Remover For Teethers Clean, White, Polish, Gum Care 5 adjustable strength modes (31000-36000 times per minute). Our goods are authentic, with genuine patents, counterfeit must be investigated! Customers please identify our products! Specification: Size: 25cm*10.5cm*4cm - Weight: 200G