A4Tech HS-30i ComfortFit Stereo Headset

Description A4Tech HS-30i ComfortFit Stereo Headset Features Style: On-the-Head Speaker: 40 mm Frequency range: 20 Hz-20 KHz Impedance: 32 Ohm RMS: 50 mW Sensitivity: 102 dB MIC sensitivity: -50 dB Cable length: 2 m Plug: 3.5 mm Controller: Volume knob on the headset