The high-frequency magnetic levitation sound wave vibrates, cares for sensitive gums, deeply cleans every dead corner of the mouth, leaving nowhere to hide residues and plaque between teeth.High-density DuPont soft bristles, the soft bristles are rounded to care for your delicate gums and clean your mouth more carefully.The whole body is airtight design and adopts contact type charging to prevent water ingress and short circuit. The built-in chip integrates overcharge and overdischarge protection, making it safer to use.Change zones in 30 seconds, stop in 2 minutes, set the recommended brushing time, so that you can evenly brush your teeth in each area.High-quality waterproof, can wash the whole body, can also be used in the shower room, sealed to prevent water.