Two touch: answer the call; play/pause music.
Three touch: hang up/refuse to answer the phone/ The next song.
Press 2s during calling：hang up
Press the earphone for 2s in standby and palyback mode：Start the voice assistant.
Press both sides for 2s at the same time : enter/exit the game mode.
Wearing detection: when palying music, take off any earphone the music will automatically stop, put on the earphone again & the music will resume.
