FANAPU Ultrasonic Tartar Remover for Home Use, Dental Calculus Plaque Remover, Teeth Stain Scraper with Mouth Mirror DuPont Bristles IPX7 Waterproof Long Battery Life Variable Frequency Vibration Intelligent Care 4 White Modes Medical-grade Alloy Steel Head (Flat Head/Pointed Head) Intelligent High-frequency Vibration + Steel Head Switch Freely to Scrape/Clean Teeth and Easily Remove Tartar and Stains The Working Head can be Replaced Freely Low/Low Gear: Suitable for People with Sensitive Teeth/Children/Light Tartar Mid/Medium Gear: Recommended for Daily Brushing Mode Hig/High Gear: Suitable for People who want to Quickly Remove Tartar Strong Gear: Suitable for People with Severe Tartar and Stains Press and Hold the Power Button to Turn On/Off, Short Press to Switch Mode 500mAh Large Capacity Battery 4 Hours Charging with DC2.0 Direct Charge