... low frequency ultrasound Cavitation, RF,Vacuum, 635nm Diode Laser four technology in one machine, achieve the slimming plus tighten ... 4/10.4/15 inch color touch screen Cavitation Max output 150 W Cavitation Frequency “40KHz”/ “28KHz+40KHz Adjustable”/ ... it combine four technology in one machine, to achieve slimming and tighten skin together! Ultrasound cavitation process starts with ultrasound waves, ...