The Lenovo 100 Stereo USB Headset The Lenovo 100 in-ear headphone is a half-in-ear headphone with an in-line mic that lets you switch seamlessly between music and calls. It provides premium design features such as mic and headphone noise isolation. Its 9mm drivers deliver excellent sound quality every time. With three sizes of ear cups users can enjoy long-lasting all-day comfort. When they\'re done listening the headphone can be stored in the provided pouch.works with all leading Unified Communication platforms. It is lightweight for all-day wear with comfortability leather and memory-form earcups. With 30 mm drivers with neodymium magnets it delivers great audio for VoIP calls as well as for music. Adjustable Headband and Boom microphone allows either left-side or right-side wearing. You\'ll have easy USB-A plug-and-play connectivity and a robust 1.8m cord..