Lenovo USB-A Wired Stereo Headset Gen 2

<b>Headphones</b> Total Harmonic Distortion (THD): 3% Impedance: 32 ? Ear coupling: Circumaural Headphone frequency: 20 - 20000 Hz Headphone sensitivity: 116 dB <b>Microphone</b> Microphone type: Boom Microphone sensitivity: -40 dB Folding microphone: Yes <b>Operational conditions</b> Operating temperature (T-T): -5 - 40 °C <b>Packaging data</b> Package depth: 184 mm Package height: 58 mm Package width: 185 mm Package weight: 258 g <b>Performance</b> Product type: Headset Product colour: Black Cable colour: Black Recommended usage: Calls/Music Wearing style: Head-band Certification: CB/FCC SDOC/ IC Voc/VCCI/EMC/KC EMC/ECAS ROHS/CE ROHS/BSMI Foldable: Yes Headset type: Binaural Volume control: Button Control unit type: In-line control unit Control type: Buttons <b>Ports & interfaces</b> USB connector: USB Type-A Connectivity technology: Wired USB connectivity: Yes <b>Safety warning</b> Warnings: Do not disassemble or modify the product yourself. Warnings: The product contains batteries which must be disposed of correctly. Warnings: Read the user manual before use. <b>System requirements</b> Mac operating systems supported: Yes Windows operating systems supported: Yes Mobile operating systems supported: Yes <b>Weight & dimensions</b> Weight: 140 g