Exceptional voice call quality Inline control box with mic mute, hook and volume control buttons Plug and play with USB-A plug The Lenovo USB-A Wired Stereo Headset Gen 2 is a professional headset features a control box with a mute button, hook button and volume control buttonsmaking it easy for you to manage calls. In addition, it is lightweight, portable and keeps you comfortable all day. Performance Certification CB/FCC SDOC/ IC Voc/VCCI/EMC/KC EMC/ECAS ROHS/CE ROHS/BSMI Cable colour Black Foldable Yes Control type Buttons Control unit type In-line control unit Volume control Button Product colour Black Headset type Binaural Recommended usage Calls/Music Wearing style Head-band Product type Headset Ports & interfaces USB connector USB Type-A USB connectivity Yes Connectivity technology Wired Headphones Total Harmonic Distortion (THD) 3% Headphone sensitivity 116 dB Impedance 32Headphone frequency 20 - 20000 Hz Ear coupling Circumaural Microphone Folding microphone Yes Micropho