For voice recording, streaming and presentations, the Neewer KM23C Microphone with 1x, 4X for select iPhone and Android mobile devices offers a practical place to start. Bring voices forward and cut down on the distant, built-in-mic sound. The Neewer KM23C Microphone with 1x, 4X for select iPhone and Android mobile devices is made for voice recording, streaming and presentations and fits naturally into home, studio or location setups. Useful listed details include 1x and 4X. Compatibility cover...