4x3.8x1.2cm blue Automatic U-shaped children's toothbrush, electric ultrasonic oral cleaning and nursing device AZ16086 Small and light: 4x3.8x1.2cm and 5x4.4x1.4cm two sizes, light and small, mini body, lighter than eggs, baby can hold with one handEfficient cleaning: sonic clean teeth, micro-vibration protects the gums, children's mouth is delicate, bears sonic toothbrush has a special 24,000 rpm frequency, which uses sound waves to drive water to clean the teeth without damaging the gums and at the same time cleaning the gaps between the teethUltraviolet sterilization: equipped with 406 nanometer ultraviolet light, sterilization without odor, effectively preventing the growth of bacteria, reducing the occurrence of baby's periodontal disease, and keeping tooth decay bacteria away from the babyMulti-function: one-key switching of three modes, gentle massage: gentle cleaning, soothing gums. Gentle cleaning: effective removal of plaque and stains. Deep cleaning: cleans and brightens teeth.More professional: focus on children's oral health and care for children'ss young teeth, more suitable for children'ss vibration frequency, just bite, brushing is as simple as chewing gum, customized development for children'ss mouth.Waterproof: IPX7 grade waterproof, full body waterproof design, clean and worry-free, and can be used by babies who like to play with water.Wireless charging: put down the existing charge, fast charging is safer, about 120 minutes to complete a charge, accompanied by 15 daysReminder: The store not only has fully automatic toothbrushes for children, but also whitening cavity toothbrushes for adults, and there are also braces sold separately.