... Frequency:3.0MHz; Useage:Ultrasonic Beauty Body Transducer Ultrasonic Ceramic TransducerDiameter:20mm;Frequency:3.0MHz;Useage:Ultrasonic Beauty Body TransducerThe Ultrasonic Transducer use for Beauty Body ... , alarm systems, reversing radar, ultrasonic cleaning, ultrasonic atomization, marine fish exploration, the range of ultrasound equipment etc. High quality, competitive price, timely delivery and ...