LED
Indication
Status
LED
Indication
Power
on
Power
off
Standby
mode(connected)
Idle
mode(disconnected)
Pairing
in
progress
Play
Music
low
battery
Charging
in
progress
Charging
completed
Blue
LED
flash
3
times
Red
LED
on
1
second
Blue
LED
blink
once
every
10
seconds
Blue
LED
blink
twice
every10
seconds
The
red
and
blue
LED
flash
alternately
Blue
LED
flash
slowing
once
every
10
seconds
Red
LED
flash
slowing
once
every
10
seconds
Red
LED
steady
on
Red
LED
off
Safety
message
Attention!
Please
read
this
user
manual
before
using
the
product.
Please
do
not
use
this
product
in
radiation
restricted
area.
Electrical
Equipment
forbid
area
Please
turn
off
MAS
‐
DUO
WIRELESS
when
seeing
the
“RF
product
prohibit
sign”.
Airplane
Please
turn
off
MAS
‐
DUO
when
boarding
on
the
airplane
aviation
safety
Medical
facilities
Please
do
not
use
MAS
‐
DUO
WIRELESS
in
the
hospital
or
near
some
medical
equipment
in
case
it
may
affect
the
electromagnetic
interference.
Please
check
with
medical
equipment
suppliers
or
internal
doctors
before
using
the
product.
Product
Terms
and
Conditions:
1.
Please
fully
charge
the
battery
before
you
first
use
the
product.
2.
Please
do
not
use
the
product
in
the
excessive
humid
environment.
3.
Please
charge
the
battery
at
latest
once
a
week
to
preserve
battery
life
if
it
is
not
in
use
for
a
long
time
4.
Please
use
the
original
battery
and
charging
cable.
MAS
voids
all
warranty
responsibility
for
using
the
non
‐
original
parts.
5.
To
avoid
breaking
the
cord,
please
disconnect
the
inline
controller
microphone
cable
by
pulling
out
the
plug,
not
the
cord.
6.
High
volume
may
affect
your
hearing.
For
your
safety,
please
do
not
use
headphones
while
driving
or
cycling.
7.
MAS
voids
all
warranty
responsibility
for
any
physical
alteration
to
the
headphone.
