How do I control music playback and volume using touch controls on the A90 Pro?

Double-tap either earbud to play or pause music, press and hold the left earbud for 2 seconds for the previous track, and press and hold the right earbud for 2 seconds for the next track. To adjust volume, single-tap the left earbud to turn it down and single-tap the right earbud to turn it up. (Page 10)