Product Features: Soft bristles, with a maximum vibration rate of 35,000 times per minute; Ultrasonic vibration for cleaning the toothbrush; Memory timer function to cultivate a scientific and healthy brushing habit; Five brushing modes: Whitening, Clean, Gentle, Strong, and Massage; IPX7 waterproof; Replaceable toothbrush heads; DC charging; Indicator light to show charging level. Note: When the product is not used for a long time, please store it in a cool and dry place, and please disconnect the charging power supply to avoid fire or danger; During brushing, use the brush's own vibration power, do not squeeze the brush excessively; Please do not share the brush head with family members or others.