Headphone: Genius Headset HS-M505X 40mm driver unit; 20Hz to 20KHz frequency response 32 ohm is the impedance. Sensory level: 115dB±4dB The cable is two meters long. microphone: Directivity: omnidirectional; sensitivity: -34±3 dB - frequency response: 100Hz~10KHz - driver unit: 6mm - impedance: 1 year, 2.2 kohm/2VDC