Electric Sonic Dental Calculus Remover,Dental Plaque Tartar Remover for Teeth,Hi. DENTAL CALCULUS REMOVER EFFECTIVE:Cosy Life dental plaque remover removes buildup and tartar effectively with high frequency and strong vibration to reach into those hard spots and remove plaque buildup around teeth and gums. 3 WORKING MODES AND LED LIGHT:Clean mode,Normal mode and Soft mode. The sharp end tip is used to clean between the teeth and closer to the gum line, while the more flat end tip is for more outer surface {url removed} turn on and off just short press the power button for 2 {url removed} change the tool head simply crew the attachment counter clockwise. To turn the light on so you can see what your doing, just do two short clicks on the power button while it running, and it will come on. USB RECHARGEABLE:The dental calculus remover comes with built-in 300mAh Li-battery and powered by USB.No adapter is provided.The input of charger should not be over 5V-1A otherwise it will not charge at all. HUMANIZED:Conforms to ergonomics, the silicone handle feels great when holding. With charming color and portable size, this lightweight tartar remover is absolutely a great dental care product for you and your loved ones. High Frequency and Strong Vibration. FDA APPROVED&PREMIUM MATERIALS:food grade silicone and professional grade alloy metal cleaning head can effectively remove dental plaque and tartar and leaves your mouth feel as you just left the dentist