- Headset with volume control. - 1,8 m cable with 3.5 mm stereo plug, with volume control. - Headphone: Resistance: 32 ?, Frequency Response: 20 Hz - 20 kHz. - Microphone: Resistance: 600 ?, Frequency Response: 30 Hz - 16 kHz. - Microphone type: omni-directional.