Features:1. 40000 times/min high-frequency vibration deeply cleans the oral cavity, efficiently removes tartar and dental stains, and achieves the impact of cleansing and whitening teeth. 2. Help you get rid of dangerous breath, improve yellow teeth and black teeth, and stop enamel decay, swollen gums and other oral problems. The round toothbrush head manufactured from zero DuPont tremendous hair can rotate at 360°, which inserts the radian of teeth surface and cleans teeth with out hurting gums. USB charging design, with an extended battery lifetime of 15-30 days after full charge, assembly your day by day tooth cleaning needs. Specifications:Material: ABSColor: whiteRated voltage: 3 power: 0: 5V 0 grade: IPX5Product size: 16+8cmBattery capacity: 500mahCharging time: about four hoursUsage time: 15-30 daysPacking: 27*12*5: Replace the toothbrush head every three months. Packing List:1* white host4* toothbrush heads1* USB Charging Cable1* English User Manual1* Packing Box