TECHNICAL SPECIFICATION
   
Use Way: Headphone
Speaker Rize: 40mm
Speaker diameter:  40mm
Sensitivity:  104+/-2dB, S.P.L. at 1kHz
Frequency response:  20Hz-20,000Hz
Cord length: 1.2m
Plugs type:  3.5mm stereo 
Sensiticity: 102 dB
Impedance: 32 Ω
Jack: 3.5mm
Mic size: 6mm*5mm
Mic Frequency: 1KHZ
Mic Sensiticity: -38±3dB(0dB=1V/Pa,1KHz)
Mic Directivity: 0~180±20º,400-4kHz