Logitech H111 Stereo Headset

– Microphone Type: Unidirectional – Sensitivity (headphone): 32 Ohms – Sensitivity (headphone): 100 dB /-3 dB – Sensitivity (microphone): -58 dBV/µBar, -38 dBV/Pa /- 4 dB – Frequency response (Headset): 20 Hz – 20 kHz – Frequency response (Microphone): 100 Hz – 16 KHz