DollaTek Lossless USB Volume Control Knob, Computer Speaker Audio Controller Adjuster with One Key Mute Function Support Win7/8/10/XP/Mac/Vista Android

One key mute function and double speed adjustment: just press the knob to mute when you are listening to music, and back to music when you press again. You can adjust the volume with two different speed, less rotating but more volume change designed for built-in speakers or low power speakers. Support many systems:Win10/8/7/XP/Vista/Mac and Linux, it will work as soon as you insert it to your audio source device without any drive. A great volume control tool for watching videos, playing games, even will be the best volume controller for activities, wedding, meeting, celebration and so on. Shell material: Aluminum, Color: Black , USB wire length: 1.5m, Size: 82 x 50 x 40mm, Weight: 110g Mini size and Strong construction: made of metal shell and digital rotating encoder equipped convenient for you to carry everywhere