USB portable charging-Electric Professional Teeth Polisher is Type-C socket USB charging,can be applied to rechargeable batteries, car, PC side charging, charging 2 hours, daily use lasts about 60 days. 5 different replacement heads-silicone brush head, cleaning massage cup, flat brush, pointed brush. Unique design, easy to remove stubborn stains on the teeth, flat stains, interdental stains. IPX7 Waterproof- The body of dental tooth polisher device are totally waterproof,it is no problem to wash partially or completely under water. New Delicate Vision-Elegant white color,golden button and ring decoration,more fashionable,rounded body shape, comfortable and befitting to hold. Effectively Clean-high pressure frequency vibration effectively remove teeth calculus caused by coffee, tea, smoking, which may caused by long-term and food.