Its a traditional dynamic microphone (which is a very old style of microphone design, which is robust and relatively inexpensive to make well. They use the same dynamic proces as a speaker, only in the inverse so require sound to make sound and are based on a moving coil like in a speaker. This results in the facts that dynamic microphones have virtually no sound floor making this microphone more suited for low level recording for ASMR and ambient noise when it is attached to a suitable recorderSee full review