Microphone Type: Bi-directional Input Impedance: 22 Ohms Sensitivity (headphone): 122 dB /-3 dB Sensitivity (microphone): -44 dBV/Pa /- 2.5 dB Frequency response (Headset): 20 Hz – 20 kHz Frequency response (Microphone): 100Hz-6.5KHz Compatibility: Works with common calling applications across most platforms and operating systems. Analog connection with 3.5 mm audio in and audio out jacks.
