Lenovo Headset P180 (Black) 3.5mm Half in Ear Headphone with Microphone Comfortable "Half In-Ear" design makes it suitable everyday use. Effective built-in mechanism for external noise isolation supports sound quality when used indoors or in outdoor settings. Headsets are available in three (3) sizes to provide greater comfort for all users. Built-in omni-directional microphone provides superior audio quality. Sold in retail packing with a convenient carrying case included.