Instruction Manual

30
are not
sufficiently
loud.
are not used.
not good at playing
body sounds. Please
use earphones to
listen.
The phone
volume is set
low.
Please increase the
phone volume. Body
sounds are mainly
composed of low-
pitched sounds that
are less audible.
Higher volume is
needed than that for
other sounds such as
music.
Earphones
compatibility
with the
smartphone.
Please check if your
earphones are loud
in listening to other
sounds on this
phone. Try another
set of earphones or
another smartphone
to confirm.