Specially designed for sensitive teeth, this product has soft and non-irritant bristles that go extensively into the gap of gums to clean teeth stains The higher density and convex-shaped bristles will bring you a more thorough cleaning experience. With the Bass brushing method*, the 45° inclined vibration around and under the gumline will help comprehensively remove food residue and soft dirt. The bristle is tested in accordance to FDA standard* and is safe to use. Brushing power can be directly adjusted from gentle to strong via the button on brush handle with multiple power levels to choose, suitable for different oral conditions Besides the gentle and standard modes, users can set favorite brushing speed and duration via Xiaomi Home APP, satisfying the needs of different groups of people. Information such as brushing score and remaining battery can be displayed on the toothbrush. Detailed data and analysis reports can be viewed in Xiaomi Home APP to help you develop a good brushing habit. Multiple power adjustment with high-frequency vibration The bristles are DuPont Staclean Brush wire* | LED smart display Personalized Settings with App | Long battery life and flexible charging Disclaimer: * PX7 waterproof rating means that the equipment will not be damaged in case of being soaked in 1m underwater for 30 minutes; However, the high-temperature shower water or bath water would produce a large amount of water vapor and the water molecules may enter the device, so please do not use it when bathing; IPX7 water resistant rate testing report code: ARQT-ESH-P21091340. Tested by: LCIE china Company Limited. * "360 Wireless" means that the electric toothbrush device does not have a charging interface, and it can be charged when placed on the charging base at any angle.