Vivitar 360 Degree Ultrasonic Whitening Toothbrush is a u-shaped brush head that cleans all surface areas of teeth equally (even those back molars!) With a high vibrational frequency, it cleans your teeth with 63,000 strokes per minute.  In addition, the blue LED light eliminates bacteria and accelerates whitening!  With 4 modes- Regular, Sensitive, Massage, and Teeth Whitening mode, you can customize your experience to give you the perfect clean every time.  Comes with a rechargeable base that keeps it fully charged and ready to go.