PowerLocus Ptouch Manual Del Usuario página 5

Previous Song – To go to the previous song, simply slide from the
front side of the touch button to the back side(horizontally from
right to left). There is no need to press the touch hardly; soft slide
movement does the job.
Volume UP - To increase the volume of the song, just slide from the
down side of the touch button to the upper side(vertically upward).
Make sure you slide to the top and not halfway. There is no need to
press the touch hardly; soft slide movement does the job.
Volume DOWN – To decrease the volume of the song, simply slide
from the upper side of the touch button to the bottom(vertically
downward). Make sure you slide to the bottom and not halfway.
There is no need to press the touch hardly; soft slide movement does
the job.