Lenovo 100 Stereo Analog Headset GXD1B60597 Silver — Binaural Over-Ear Design, 3.5mm Audio Jack, 1.2m Cable, 2x30mm Drivers, 20Hz – 20kHz Frequency, 32Ω Impedance, 98±3dB Sensitivity, Includes Microphone, Lightweight 0.11kg, Plug-and-Play for All OS.