Feature:1. High Frequency Vibration: 2 million vibrations per minute for quick removal of dental calculus. 30Hz40Hz frequency locking to balance power and avoid tooth damage.2. Designed with Light: LED for precise guidance and thorough cleaning of dental calculus in all areas of the mouth.3. Functions: Effectively eliminating dental calculus and tea stains. The machine automatically stops when it touches the gums to avoid causing any harm.4. 3 Cleaning Modes: Mode 1 for eliminating stubborn stains from smoking or coffee; Mode 2 for mild to moderate dental calculus; Mode 3 for powerful cleaning and removal of stubborn dental calculus.5. Intelligent: Mode memory remembers the last used mode upon startup. Automatic shutdown feature after 10 minutes of inactivity to prevent overheating.6. IPX6 Waterproof: Highly waterproof design ensures a clean and healthy oral environment. Contact tooth start resonance and integrated body ensure cleaning after use.Specification:Item Type: Home Dental Calculus RemoverMaterial: ABSBattery Type: Lithium ion (Built in)Battery Capacity: 500mAh.Package List:1 x Dental Calculus Remover1 x USB Cable1 x Manual2 x Clean Wipes2 x Tip1 x Wrench