1.40KHz+Vaccum+Ultrasound Cavitation+RF Multi-Function Beauty Equipment 2.40KHz, very effective 3.Ultrasonic+Vacuum ... +RF 4.OEM 40KHz+Vaccum+Ultrasound Cavitation+RF Multi-Function Beauty Equipment The principle and functionuse strong acoustic frequency ... skin, heated to supply oxygen and nutrients, strengthen cell function, improve the blood and lymph circulation, active metabolism, eliminate ...