• Frequency responseHeadset: 20-20'000 HzMicrophone: 100-10'000 Hz• Microphone sensitivity-59 dBV/µbar, -39 dBV/Pa+/-4dB• Headphone Impedance32 ohms• Microphone Bias Voltage3.0 V DC• Microphone Load Resistance2200 Ohms• Connector2 standard 3.5mm audio jacks (audio in and out)