Sonic electric toothbrush soft bristle waterproof charging multi-gear adjustment couple adult toothbrush

Vibration frequency: 16000-18000/min Working mode: cleaning/whitening/gentle gum protection/polishing Rated voltage/power: 5VDC/3W Waterproof grade: IPX7 Battery capacity: 500mAh Execution standard: GB4706.1-2005 GB4706.59-2008 1. IPX7 waterproof 1. IPX7 waterproof 2. Medical grade alloy steel head (flat/pointed) 2. Medical grade alloy steel head (flat/pointed) 3. Intelligent high-frequency frequency conversion vibration + steel head to switch brush/clean brush at will to easily remove stone stains 3. Intelligent high-frequency variable frequency vibration + steel head switch to brushing/cleaning at will, easy to remove stones and stains by brushing teeth 4. DuPont round bristles, high density bristles, 3D masonry curved surface 4.DuPont rounded bristles, high-density bristles, 3D brick and stone curved surface 5. Long battery life 5. Ultra Long Range 6.4 Big teeth cleaning mode 6.4 Dental cleaning mode