Detailed introduction

1).Frequency Range: 20Hz - 20KHz
2).Impedance: 16 Ω ±15%   
3).Speaker:ф9.0mm
4).Sensitivity:98±3dB(at 1KHz,0.5rms) 
5).Plug Type :ф3.5mm
6).Length of Cable:1.2m±10% 
7).Microphone Sensiticity: -42dB±3dB
8).Microphone Specification:ф4*1.5mm