Strong Construction: the USB volume control is made of metal shell and ALPS rotary shaft, equipped with breathing light and come with USB cable.
This volume control knob supports Win10/8/7/Vista/XP/Mac, once you insert it to your computer, it can start to work; with OTG cable, it can also work for phone.(Note: some phones can't work, for replacing Android native sound control program , such as Samsung.)
With one key mute function, when you are listening to music, just press the knob, it will stop at once and back to music when you press again.
Simple Operation: turning the knob to turn up and down volume, press the knob to make it mute, press down the knob and turning to adjust volume more quickly; keep pressing the knob for 8s, it will enter night mode, breathing light will stay on.
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.
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