Technical parameters:
<br />Speaker diameter:  27mm
<br />Impedance: 32 
<br />Frequency response: 20~20000Hz
<br />Sensitivity: 106dB
<br />Directional: all direction
<br />Wire length:   1.1 meters.
<br />Pin: 3.5MM
<br />Package include:1 Over-ear Headphone