... Frequency:1MHz; Ultrasonic Beauty Body TransducerDimension:D40mmXH18mm;Frequency:1MHz; The Ultrasonic Transducer use for Beauty Body. Dongguan ... ceramic element, SMD magnetic transducers, condenser microphones, ultrasonic sensor,Atomization piece, speakers and other audio ... , toys, alarm systems, reversing radar, ultrasonic cleaning, ultrasonic atomization, marine fish exploration, the range of ...