2.
Dial
the
switch
to
ON
to
turn
on
the
power
supply
and
the
blue
light
will
turn
on.
3.
Copy
the
music
into
SD
card
and
then
insert
the
card
into
SD
card
holder
to
play
the
music
and
the
red
light
will
turn
on.
4.
REV/VOL+
NEX/VOL
‐
REV/VOL+
NEX/VOL
‐
PLAY/PAUSE
Press
REV/VOL+
or
NEX/VOL
‐
shortly
to
select
music
and
press
REV/VOL+
or
NEX/VOL
‐
for
a
longer
time
to
adjust
the
volume.
Press
PLAY/PAUSE
to
select
play
or
pause.
5.
Dial
the
switch
to
OFF
to
turn
off
the
power
supply,
charge
the
lithium
battery
via
DC
interface
and
then
the
blue
light
turns
on.
Use
the
standard
USB
power
supply
to
charge
for
approximately
6
‐
8
hours.
6.
Use
the
external
power
supply
or
built
‐
in
battery
to
play.
Use
the
built
‐
in
battery
fully
charged
to
play
the
music
continuously
for
2
‐
3
hours.
36