mini voice recording microphone portable karaoke mini karaoke microphone, mic for singing, recording, voice recording (silver) gdcycdg specification:<br> product name: mini microphone<br> material: aluminum alloy<br> uses: mobile phone singing; network recording<br> applicable to: most mobile phones, computers, tablets, etc. <br>condenser microphone<br> unidirectional<br> frequency response range: 30hz ~ 20khz<br> output impedance: <200ω<br> sensitivity: -30db +/- 3db (0db = 1v / pa at 1khz)<br> power supply: 3v<br> interface: 3.5m (use with any equipment equipped with 3.5mm)<br> line length: ~ 1.5m<br> package:<br> 1 * mini microphone<br> 1 x sponge cover