14. How to enter pairing state in Bluetooth receiving mode on the M15?

When used for the first time, the player will enter paring state automatically after entering Bluetooth receiving mode. And you can also hold the Play button for 3 seconds to force enter pairing state;

If the pairing is unsuccessful, try to hold the Previous track and Next track button at the same time for 5 seconds to clear the pairing list, and then try to pair again after the M15 automatically re-enters pairing state.