Logitech H111

Input Impedance: 32 Ohms

Sensitivity (headphone): 100dB +/-3dB

Sensitivity (microphone): -58dBV/μBar, -38dBV/Pa +/-4dB

Frequency response (Headset): 20Hz - 20kHz

Frequency response (Microphone): 100Hz - 16kHz

Cable length: 5.90 ft (1.8m )