USB Volume Control Knob Bluetooth Adapter Multimedia Computer Speaker Controller Black

Description

A. Sound control: Red ON, the button adjusts the volume of the computer, one-button mute, the song switches up and down; B. 3.5mm audio output: Blue ON, the wire-controlled earphone is inserted into the AUX OUT hole, and the earphone outputs computer voice. ; Compatible system: compatible for Win XP 7 8 10, compatible for ios operating system. Plug and play, no driver required. format: MP3, APE, FLAC, AAC, MP4, M4A, WAV, AIF, AIFC