... ,Replaceable,expandable 2,Customized to solve different problems 3,Multi-frequencies are avaliable Clangsonic Immersible ... renewable by submersible transducer module3, Customized to solve different problems with different frequency, power, shape, size etc accordingly4, Multi- ... This one is specifically designed for cleaning electronics, with 125KHz 360Watts. 3 sets of these submersible transducers ...