Ultrasonic Cavitation Beauty & Slimming Machine GB-838 With high frequency of ultrasonic wave, GB- ... 3 in 1 (eye, facial and b Ultrasonic Cavitation Beauty & Slimming Machine GB-838With high frequency of ultrasonic wave, GB-838 ... reliable and safe for beauty therapy. Besides the common square ultrasound wave, it can create the unique 4Hz sinusoidal wave, which ...