Model No.:SM-HD280M.V
1,Good-quality headphone for computer .
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:18~20kHz 
Cord Length:220CM

Microphone specification:
Mic Dimensions:6x5mm
Sensitivity:-58±3dB 
Frequency Response:30~16000Hz
Directivity:Omnidirectional