Description:
This high performance USB volume control knob, computer speaker audio volume controller adjuster has one key mute function,supports Win7/8/10/XP/Mac/Vista Android system,easy to use and operate,suitable for watching videos, playing games, activities, wedding, meeting,celebration,etc.

Features:
Strong Construction
The USB volume controller knob is made of metal shell; ALPS rotary shaft supports 30 anchor points every lap & 360°infinite rotation.
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.
SI-Mple Operation
Turning the knob to turn up or down volume, press the the knob to make it mute, press down the knob and turning to adjust quikly. Knob for 8s, it will enter to the night mode, breathing light will stay on.
Easy Connection
Just insert it to your computer, then it will start to work; if you use it with OTG cable, it can also work for ph-one.
Plug and Play
No need to install any driver or software on your PC to drive this volume regulator, it will work once you plugging on the device.The USB volume adjuster directly adjusts your Windows volume which won't cause distortion and noise.
Wide Compatibility
Compatible with multiple systems,supports Win10/8/7/Vista/XP/Mac/Android,SI-Mple and convenient.
Blue Breathing Light
Equipped with blue interactive breathing light to enhance the sense of interaction.In default mode, the breathing light only lights on under every pressing on the knob.If you don't press it,the light will automatically turn off.

Specification:
Model: AM-U002
Material: Metal shell
USB cable length: 2m
Item size: 5.5 * 5.5 * 4.4cm /2.17 * 2.17 * 1.73in(L * W * H)
Item weight: Approx.200g /7.05oz
Package size: 11.5 * 10 * 5cm /4.53 * 3.94 * 1.97in(L * W * H)
Package weight: 300g /10.58oz

Package list:
1 * USB Volume Controller Knob
1 * USB Cable
1 * User Manual