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