Product Name: Mobile phone microphone
<br />Product Type: K1
<br />Product color: Flame red, rose red, princess powder
<br />Product gross weight: 81g
<br />Mitou size: 6.5 * 5.0mm
<br />Sensitivity: -58dB ± 2dB
<br />Orientation: full point
<br />Impedance:  2.2k 
<br />Working voltage: 1.5V-2V
<br />Efficiency response: 20-1600Hz
<br />Signal to noise ratio:   50dB
<br />Plug diameter: 3.5MM