Soft Bristle U Shape Smart Teeth Whitening Waterproof Profesional Rechargeable Automatic Tooth Brush Set【Superior Material】The U form toothbrush head is made from meals grade silicone, soft, non-toxic and no harmful, effectively sterilizing and with ease massaging. 【4 Working Modes】Soft cleaning mode, powerful cleaning mode, massaging mode, and cold gentle whitening mode. You can adjust it by way of means of easily pressing the power switch. 【U-Shape Design】Designed for perfectly fitting human mouth, in 48000rpm vibration, it cleans enamel with out vain angles. 【Smart and Convenient Using】USB rechargeable guarantees hands-free enamel brushing experience, and IPX7 waterproof for more practical and helpful utilizing experience.