Photo 1 of Multimedia Controller Knob with 3 Volume Control Modes and One-Click Mute Function Volume Controller Audio Adjuster for MAC/Win7/8/10

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Photo 1 of Multimedia Controller Knob with 3 Volume Control Modes and One-Click Mute Function Volume Controller Audio Adjuster for MAC/Win7/8/10Photo 2 of Multimedia Controller Knob with 3 Volume Control Modes and One-Click Mute Function Volume Controller Audio Adjuster for MAC/Win7/8/10