Features: One click mute suitable for suddenly situations. It can also pause,play, back, forward the song you are play gaming or listening. Anti-slip design at the bottom. Rotate the multimedia knob to adjust the volume. The volume control knob supports Win10/8/7, which can be plugged into the computer to start working. Plugs and use, no drive required, volume can be adjusted directly by rotating the knob. Specifications: Material:Aluminium Color:Black Size:Approx.98x59x34mm/3.86x2.32x1.34in Compatible Type-c /MIcro-usb/ USB3.0 interface; Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xUSB Volume Controller 1x USB to Type-C Cable 1x Manual