Features:<br />USB volume controller, one key to mute, USB plug and play.<br />Just insert the USB into the computer, then rotate the knob to adjust the volume, or press to mute.<br />Easy to operate and convenient to use that can be used in various occasions.<br />Support Win10/8/7/XP, ios system computer, desktop computer, notebook computer.<br />Suitable for the volume control when watching TV, playing games, listening to music, company meetings, etc.<br/>Specifications:<br />Material: Aluminum alloy<br />Item Weight: 157g / 5.54oz<br />Package Weight: 200g / 7.05oz<br />Package Size: 13 * 9 * 5cm / 5.12 * 3.54 * 1.97in<br/>Packing List:<br />1 * Controller<br />1 * USB Cable