Model No.:SM-iP158
1,Noise-cancelling function.
2,40mm speaker with high-end diaphram provide you the excellent listening experience.
3,Adjustable headband and comfortable cushion is ideal for long-time wearing.
4,Line controlled microphone let us enjoy the music and phone call freely.
5,Window box package are available.

Specification:                                                                                                                                                                                                                               Speaker size:40mm 
Sensitivity:116±3dB
Impedance:32ohms
Frequency Response:20~20kHz 
Cord Length:120CM

Microphone specification:
Mic Dimensions:4x1.5mm
Sensitivity:-42±3dB 
Frequency Response:30~16000Hz
Directivity:Omnidirectional