Logitech Wired Headset, Stereo Headphones Black

Logitech H390 USB Headset, Noise-Canceling Mic Features:  H390, USB computer headset, Noise cancelling mic,2yr warranty, Digital stereo sound,Inline controls,Padded comfort Microphone Type: Bi-directional Input Impedance: 32 Ohm Sensitivity (headphone): 94 dBV/Pa /- 3 dB Sensitivity (microphone): -17 dBV/Pa /- 4 dB Frequency response (Headset): 20 Hz – 20 kHz Frequency response (Microphone): 100 Hz – 10 KHz