... :1MHz; Ultrasonic Beauty Body TransducerDimension:D40mmXH18mm;Frequency:1MHz; The Ultrasonic Transducer use for Beauty Body. Dongguan cosson electronic plasic CO.,LTD ... , mechanical), piezoelectric ceramic element, SMD magnetic transducers, condenser microphones, ultrasonic sensor,Atomization piece, speakers and other audio components. And our company ...