From the manufacturer: Lenovo 100 Stereo Analogue Headset USB 180° Boom Microphone Memory-Foam Earcups in Black Crisp. Unambiguous. Comfort. The Lenovo 110 Stereo USB Headset is the ideal choice for anyone seeking hassle-free plug-and-play, powerful audio, clear calls, and passive noise cancellation. It is perfect for both left- and right-siders due to its dynamic rotatable microphone, while its