?????????????? PERFORMANCE • Headset • Speaker Unit: 50mm Driver • Frequency Response: 20 Hz - 20 KHz • Sensitivity: 100 dB • Impedance: 16 ohm • Microphone • Frequency Response: 100 Hz-10 KHz • Sensitivity : - 44 dB • Cable • Material: Tangle-Free Braided Cable • Cable Length: 200 cm • Port: USB ?????????? • 220mm X 195mm X 97mm • Box dimension: 254mm X 220mm X 104mm