UGREEN USB C to 3.5mm Jack Adapter expands an Aux audio port and USB C PD Charger port to your Type C phone/tablet(without 3.5mm jack), enabling you to listen to music while charging. No need to worry about power off. The USB C Audio Charger Splitter also supports microphone and in-line control functions(like Volume+/-, Next or previous song). More convenient to answer to phone and control song playlist.