The Porodo Lifestyle W-Sonic Electric Toothbrush offers a good problem-solving experience with its powerful 18000-20000 vibrations per minute vibration frequency. It is designed for adults, with a round-shaped bristle for gentle cleaning. The long 500mAh battery provides nearly 50 days of use on a single charge and requires only 3 hours to be fully charged. The low noise level of <55dB makes sure that you will never have to hear a loud voice while brushing. IPX7 water resistance makes it safe to use while showering or bathing. Its adjacent quadrant smart timer guides the brushing process so that all quadrants in the mouth get their appropriate time. For efficiency and convenience, the Porodo W-Sonic Electric Toothbrush ensures performance and long-lasting power for the best oral care.