AUX-IN socket
Insert the Aux in line and connect to external playback device, the original mode will stop and switch to Aux
in music play mode.
TF card lock
Insert the TF card, the original mode will stop and switch to TF card music play mode.
Microphone
Bluetooth hands free call. Incoming call ,short press to answer or hang up
Long press to refuse the call. Short
press twice to redial call.
Phase-inverted tube
Air hose can offer sound of good quality, especially bass.
