Description: The product is used to remove the stain on teeth, polish the teeth and massage your gums. Features: Anti-creeping and waterproof security design. Wireless inductive charging mode, ensure security and convenience. High intensity frequency, effectively smash the stubborn teeth stain, reduce the damages to the enamel and gum. Three grades of adjustable frequency to remove stubborn tartar and teeth stain. Household design, convenient to have dental care at home, remove the attachment on teeth in time, prevent periodontal diseases. Specification: Item Type: M3-2 Charging mode: Wireless inductive charging mode Voltage: 90-250V Waterproof Frequency: High intensity frequency Work Modes: Three-dimensional adjustable Charge time: Approx. 12 hours Wight: Approx. 500g Size: 3*3*24cm/1.2*1.2*9.4in Color: Pink, Blue (Optional) Package Includes: 1 Set x Sonic Dental Calculus Tool Instruction: 1. The first charge recommended enough for 24 hours, after the light does not flash which shows electricity is full. 2. Long press 3 to 5 seconds to turn on/turn off the device. 3. Short press the on/ off switch to choose the grade. It is based on your demand. (The second light indicates grade 1, the first light indicates grade 2, simultaneous flash indicates grade 3.) 4. When cleaning, the tip should be placed vertically on the junction of teeth and calculus or smoke stains. 5. Do not press hard or fast to cut back and forth on the calculus. 6. Keep the tip in a fixed position, until the stains or calculus are clearly falling off and then move elsewhere. Repeat several times. 7. After 2 minutes of use, the machine will shut down automatically with the protection mode starts. 8. Rinse the mouth after treatment and you can repeat several times adjust to your need. Note: 1. Please allow 1-3mm error due to manual measurement.Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、Anti-creeping and waterproof security design. 2、Wireless inductive charging mode, ensure security and convenience. 3、High intensity frequency, effectively smash the stubborn calculus, reduce the damages to the enamel and gum. 4、Three grades of adjustable frequency to remove stubborn calculus, tartar and teeth stain. 5、Household design, convenient to have dental care at home, remove the attachment on teeth in time, prevent periodontal diseases.