Product Description Material: Silicone + Plastic Size: 22.6x3x2.6 cm Input interface: DC 2.0 Rated voltage: 3.7V Power: 1W Battery capacity: 400mAh Charging time: about 2 hours Running time: 200 minutes Gear position: 3 gears Applicable people: Adult Color: white, black, pink Quantity: 1 piece Package content: 1host, 4cleaning head, 1mouth mirror, 1charging cable, 1*Instructions. 1.Teeth cleanerThe electric plaque remover for teeth with up to 12,000 vibrations per minute,plaque remover for teeth effortlessly and quickly removes dental calculus, plaque, tartar, stains etc. 2.Easy and convenient to usePlaque remover for teeth has 3 speeds to clean your teeth to your liking. Used to deal with different tartar, double-click the power button to turn on the light, and combined with the oral mirror, you can clean the inside of the mouth more efficiently. 3.USB Rechargeable BatteryFully charged need 2hours and used continuously for about 21 days.With USB cable, it can be charged using a power bank or laptop. Enjoy fresh breath every day. 4.4 Replaceable Cleaning HeadsUltrasonic tooth cleaner kit contains 4 additional removable cleaning heads and 1 dental mirror for auxiliary observation, which can meet more usage needs.They are suitable for different tooth regions and for solving some dental problems. 5.More flexible And Safer For UseCordless and lightweight,this lightweight dental calculus remover is absolutely a ideal dental care product for you and your loved ones.