simple question, when imprinting PEMF S on the pad, the light is flashing blue. Is there supposed to be sound going on at the same time to imprint the frequency? Or is it fine that I can't hear any sound transferring over to the pad.
簡單的問題，當在pad上壓印PEMF S時，燈閃爍藍色。是否應該同時發出聲音來標記頻率？或者我聽不到任何聲音傳輸到墊子上是否正常。
