Logitech H340 USB Headset

Logitech H340 USB Headset: Specifications: - Microphone Type: Bi-directional - Input Impedance: 22 Ohms - Sensitivity (headphone): 115 dB +/-3 dB - Sensitivity (microphone): -42 dBV/Pa +/- 3 dB - Frequency response (Headset): 20 Hz – 20 KHz - Frequency response (Microphone): 100 Hz – 16 KHz