Description:The USB Audio Volume Controller has a one-key mute function. When listening to music, you only need to press a button and press it again to replay the stopped music. There are three-level volume options, and it is easier to adjust the volume. Our embedded volume controller supports forMac/Win7/8/10. The package comes with a USB data cable and audio cable. Plug and play, no driver needed, just turn the knob to adjust the volume.Specification:Name: USB Volume Control KnobMaterial: aluminum alloy + ABSColour: BlackBluetoothes: 5.1Applicable to: Computer, Wireless HeadphonesPacking List: USB volume controller*1