Audio Knob Multipurpose USB Multimedia Volume Controller Adjuster Metal Tablet One Key Mute Speaker Mini for Computer

- Allows to connect to the PC, to quickly adjust the volume. Knob design, very convenient for watching videos/live streaming. USB Port, connects to the U disk, hard disk, mouse, etc. - Easy and quick operation, just rotate to adjust the volume, and press to mute/unmute, and press while rotate to quickly adjust the volume. - For OTG function expansion, allows to connect the keyboard, mouse, U disk, for watching movies, working, stable signals. Suitable for wedding, live streaming, recording, etc., to adjust the system volume, with no damages on the sound quality. - Main-control chips, with main frequency up to 16MHz, more fast response and operation, and response time less than 1ms. - Blue breathing lights, enhance the interaction sense, and turn off automatically for long-time not in use.