Intruction:Material : silicon+ABSShape: U-typeAngle: 360 degrees Charge:USB charging interface,Clean time:45 secondscharge time: 90 minutesModes: 3 modes(cleaning mode/Massage gum mode/Whitening mode)Frequency :8500-15000 times /minute Waterproof :IPX7 HOW TO USE:1.After full charge, install U-shaped brush head.2.Shake the liquid toothpaste out of the foam and evenly apply it to the U-shaped brush head.3.Put the brush head into your mouth, relax the bite U-shaped brush head, and select the right frequency mode.4.Easily touch your teeth, and shake your brush back and forth with your hands at the same time,   then brush your tooth more cleaner.5.After brushing your teeth,use wet cloth to clean up the water and stagnation of the fuselage,    and try to avoid soaking in water.6.Please read the instruction carefully.