USB Charging Electric Toothbrush Dental Scaler Tartar Stain Dental Calculus Remover Condition: Item Type: Electric Teeth Cleaner Material: ABS+Plastic Built-In Battery: Lithium Battery 1800mAh  Charging Method: Direct Charging Charging Voltage: 100V-240V output 5V 500MA Charging Time: 12-16 Hours Waterproof Level: IPX7 Level How e: The working tip gently touches the teeth vertically and moves to the top and bottom and left and right. Adjust the use time of each part according to the dirt condition of the teeth. The working head can be gently removed and replaced according to the actual situation. Be careful not to scratch the surface without tooth stains with the working tip. Five Working Modes: Cleaning mode Effectively and powerfully remove the dirt between the teeth and the gingival sulcus. Bright white mode With the crescendo function, the sound wave helps to remove the dirt concealed in the periodontal pocket. Massage mode Massage the gums comfortably and protect the gums. Polishing mode It can effectively remove tea stains, coffee stains, smoke stains, etc. attached to the surface of the teeth. Dental care model Suitable for users with sensitive gums, it can effectively improve gum health after a week of continuous use.