TREBLAB X3 Pro - Audio Playback Controls

CONNECT.
3. If prompted by your device to connect, select Yes.
4. You will hear “Pairing successful” and “Connected” in the
earbud after the earbud has been successfully connected.
Note: The “Pairing successful” prompt is heard only when
you pair the earbuds to a device for the first time.
No matter what earbud is connected to the device, when
you turn ON the second earbud, it will automatically connect
to the first one.
AUDIO PLAYBACK
To pause and resume playback, press the MFB button.
To adjust the volume, press and quickly release the
Volume + button on either earbud to turn the volume up
and the Volume - button to turn the volume down.
To change tracks on the X3 Pro, press and hold the
Volume + button on either earbud to play the next track
and the Volume - button to play the previous track.