Lenovo USB-A Stereo On-Ear Business Lightweight Headset w/ Control Box & Noise Cancellation - Black: ColorBlackCable Length/Type1.8m/USB-AWeight149 gWarranty TypeCRUControlsMic mute/unmute Answer, reject, end call Volume up Volume downDistortion< 3%Driver30 mmFrequency Range20 Hz – 20 kHzImpedance32ΩPower Requirement5V, 1ASensitivity116 ± 3 dBAudio InputUSB 2.0BrandLenovoOS RequirementsO