Featuring a control box and noise cancellation, this Lenovo USB-A stereo on-ear business headset is lightweight and comes in black. Length/Type/USB-A Cable: 1.8m 149 g in weight Type of Warranty: CRU Controls Mic mute/unmute Respond, decline, and end the call Volume down, Volume up, distortion less than 3% Frequency Range: 20 Hz to 20 kHz; Driver: 30 mm Power Needed: 5V, Impedance: 32Ω, Sensitivity: 116 ± 3 dBA Brand: USB 2.0 Audio Input Lenovo OS prerequisites