Gear Head AU2700S Universal Stereo Headset The Gear Head AU2700S Universal Stereo Headset has a Adjustable Headset Design to fit to anyone comfortably. Featuring the Swivel Ear cup Design and a built-in flexible microphone. Plus, the Gear Head AU2700S Universal Stereo Headset has Convenient Volume Control for easy volume access. Order the Gear Head AU2700S Universal Stereo Headset today! What It Is and Why You Need It: Adjustable Headset Design Clear Sound Technology Built-in Flexible Microphone Swivel Ear cup Design Works with Most Phones Convenient Volume Control Detailed Features System Requirements: Mobile Phone or Audio Devices with 3.5mm Audio Input/output Connector PC or Mac Computers with 3.5mm Output and 3.5mm Input