U Shaped Toothbrush: With a U-shaped design that matches the shape of your teeth this U-shaped toothbrush can reach your teeth at 360° and clean your teeth with high-frequency sonic vibrations Three Modes: The toothbrush has three working modes: standard fast and super-speed. The electric toothbrush for adults adopts the way of clicking the button to switch the working mode and the vibration frequency of the toothbrush can reach 15000-35000 times one minute Battery and Charge: This electric toothbrush for adults has a built-in 500mAh rechargeable battery with a wireless charging base that can be used for 1-2 weeks on a four-hour charge Product Material: The main part of the teeth cleaning tools is made of silicone in the U-shaped head part of the silicone bristles a total of 1968 toothbrush bristles you can be more detailed cleaning inside and outside the teeth IPX7 Waterproofing: The adult toothbrush is waterproof to IPX7 even if you submerge the toothbrush in water and restart it