This full sized headset has an in-line microphone and volume control. The microphone is conveniently located high on the cord and close to the user's mouth keeping voices and volume levels in labs quiet. The AE-9092 works great with devices that have a single jack such as iPads Chromebooks and more! The AE-9092 has a single TRRS 3.5mm 4-conductor plug that operates both the Speakers and the Microphone.