1
Audio input terminal
2
[
i
] button
3
[
] button
4
[
j
] button
5
Power/pairing LED
6
Microphone
7
Charging terminal (DC IN)
8
[RB-M500B]
[BASS
i
]/[BASS
j
] button
9
[RB-M300B]
[BASS] switch
Ear pads
Raised dot indicating the left side
The rechargeable battery (installed in the unit) is not charged
initially. Charge the battery before using the unit.
Connect this unit to a computer (
a
) using the USB
charging cord (supplied) (
b
).
• The power/pairing LED (
c
) lights in red when charging is in
progress. When charging is completed, the power/pairing LED will
go out.
• It takes approx. 4 hours to charge the battery from empty to full.
• Check the direction of the terminals and plug in/out straight holding
onto the plug. (It may result in malfunction by the deforming of the
terminal if it is plugged in obliquely or in wrong direction.)
• It is not possible to turn the power on or connect to Bluetooth
®
devices during charging.
• Make sure the computer is turned on and is not on standby or
sleep mode.
• Do not use any other USB charging cords except the supplied one.
• When the battery starts running low during use of the unit, the
blinking power/pairing LED will turn from blue to red. A beep will
sound every 1 minute. When the battery runs out, an English
guidance message will be heard and the power will turn off.
Press and hold [
] (
a
) of this unit for approx. 3 seconds
until the power/pairing LED (blue) (
b
) blinks.
• A beep will sound, and the power/pairing LED (blue) will blink
slowly.
To turn the power off
Press and hold [
] for approximately 3 seconds. An English
guidance message will be heard, and the power will be turned
off.
• If the unit is not connected to a Bluetooth
®
device, an English
guidance message will be heard and
turn off the unit automatically
approximately 5 minutes after you have stopped using it. (Auto
power off)
• Auto power off does not work when the detachable cord (supplied)
is connected.
∫
Bluetooth
®
pairing
1 In the power-off state, press and hold [
] of this unit until
the power/pairing LED blinks.
– When pairing a device for the first time:
approx. 3 seconds
– When pairing a second or subsequent devices:
approx. 5 seconds
• This unit will start to search for a Bluetooth
®
device to connect
to, and the power/pairing LED will light alternately in blue and
red.
2 Turn on the power of the Bluetooth
®
device, and enable the
Bluetooth
®
function.
3 Select “RB-M500B” or “RB-M300B” (
a
) from the Bluetooth
®
device’s menu.
• If prompted for a passkey, input the passkey “0000 (four zeros)”
of this unit.
• When the power/pairing LED (blue) blinks twice every approx.
2 seconds, pairing (registration) is completed. (Connection
established)
• If connection to a device is not established within approximately
5 minutes, the unit will be turned off. Perform pairing again.
∫
Connecting a paired Bluetooth
®
device
1 Turn on this unit.
2 Perform steps 2 and 3 of “Bluetooth
®
pairing”. (
l
above)
• When the power/pairing LED (blue) blinks twice every approx.
2 seconds, pairing (registration) is completed. (Connection
established)
When using the functions below that are indicated with the [ ]
mark, connect the Bluetooth
®
device and the unit.
∫
Listening to music [ ]
Select and play the music on the Bluetooth
®
device.
• The unit’s headphones will output the music or the audio of the
video being played back.
∫
Remote controlling (Available only if your Bluetooth
®
device supports “AVRCP” Bluetooth
®
profiles) [ ]
(Operation example)
• The volume can be adjusted in 31 levels (16 levels during calls).
When the maximum or minimum volume is reached, a beep will
sound.
A
RB-M500B
RB-M300B
B
1
2
3
4
F
C
Bluetooth
Bluetooth
ON
RB-M500B
D
E
RB-M500B
RB-M300B
BASS
ON
OFF
BASS
[RB-M500B]
• Unless otherwise indicated, illustrations in these operating
instructions are of RB-M500B.
• Functionality differences between models are indicated with the
model marks below.
RB-M500B:
[RB-M500B]
RB-M300B:
[RB-M300B]
A
Part names
B
Charging
C
Turning the power on/off
D
Connecting a Bluetooth
®
device
E
Using the headphones
Play / Pause:
Press [
] (
a
).
Increase the volume:
Press [
i
] (
b
).
Decrease the volume:
Press [
j
] (
c
).
Forward to the start of
next track:
Press and hold [
i
] for approximately
2 seconds.
Return to the start of
current track:
Press and hold [
j
] for approximately
2 seconds.
∫
[RB-M500B]
Bass reactor
While playing back music or videos on a device connected via Bluetooth
®
Press [BASS
i
] (
d
) or [BASS
j
] (
d
) to adjust the Bass
reactor strength level.
• This unit vibrates along with the bass of the music or video being
played back.
• Bass reactor strength level: Off
,-.
Low
,-.
Middle
,-.
High
(The default value is Low.)
• Even when the power is turned off, the setting before turning it off
will be stored to memory.
• The playback time depends on the music source and the Bass
reactor strength level.
• This may not be effective depending on the music or video being
played back.
• If you feel ill while using the Bass reactor, set the Bass reactor to
Off.
• Turn on this unit to use the Bass reactor when using this unit with
the detachable cord (supplied) connected.
∫
[RB-M300B]
Enhancing the bass (Bass enhancer)
You can enjoy music with enhanced bass.
Slide [BASS] switch (
e
) to ON.
To turn off the bass enhancer function
When [BASS] switch is slided to OFF, the bass enhancer function will turn
off.
• This may not be effective depending on the music or video being
played back.
∫
Making a phone call [ ]
1 Press [
] (
a
) on the unit and answer the incoming call.
• (HFP only) To reject the incoming call, press [
] twice quickly.
2 Start talking.
3 Press [
] to end the phone call.
• (HFP only) It may be difficult to hear phone conversations when
the unit is used in locations with loud ambient noise or in outdoor
or other locations exposed to powerful winds. In that case, change
the calling location or switch the calling device to the Bluetooth
®
enabled phone to continue the call.
(Press [
] on the unit twice
quickly to switch.)
• You can have the Bluetooth
®
enabled phone make phone calls by
using the microphone of the unit and an app of the Bluetooth
®
enabled phone.
(
l
below, “Activating voice functions”)
∫
Activating voice functions [ ]
You can use a button on this unit to activate Siri or other voice
functions on your smartphone or similar device.
Press [
] (
a
) of this unit twice quickly.
∫
Using the detachable cord (supplied)
While the power is turned off or the battery has no remaining
charge, this unit can be used as normal headphones by
connecting the detachable cord (supplied). (
f
)
• If you connect the detachable cord (supplied) during Bluetooth
®
connection, the Bluetooth
®
connection will be lost. (
[RB-M300B]
The
unit turns off.)
• Noise may occur due to dirt on the plug. Clean the plug with a soft
dry cloth if this occurs.
• Do not use any other detachable cords except the supplied one.
•
[RB-M500B]
When the detachable cord (supplied) is connected and
the power is turned on, you can use the Bass reactor. However,
the volume cannot be adjusted in this case.
∫
Restoring to the factory settings
Charge the battery before restoring the unit.
1 While the power is turned off, press and hold [
] (
a
) for at
least 5 seconds until the power/pairing LED lights
alternately in blue and red.
2 While the power/pairing LED is lighting alternately in blue
and red, press and hold [
i
]
(
b
)
and [
j
]
(
c
)
at the same
time for at least 5 seconds.
• The default settings will be restored after the power/pairing LED
(blue) blinks fast and the unit turns off.
• When pairing a device again, delete the registering information
(Device: “RB-M500B” or “RB-M300B”) from the Bluetooth
®
device’s menu, and register this unit with the Bluetooth
®
device
again. (
l
)
• Disassemble after the battery runs out.
• Keep disassembled parts out of reach of children.
Regarding the handling of used battery
• Insulate the terminals with adhesive tape or similar material.
• Do not disassemble.
∫
Battery
• Do not heat or expose to flame.
• Do not leave the battery in a car exposed to direct sunlight for a
long period of time with doors and windows closed.
• Battery mishandling can cause electrolyte leakage which can
damage items the leaked fluid comes into contact with. If
electrolyte leaks from the battery, consult your dealer. Wash
thoroughly with water if electrolyte comes in contact with any part
of your body.
• When disposing of the battery, please contact your local
authorities or dealer and ask for the correct method of disposal.
1 Remove the left ear pad.
2 Remove the 4 screws.
3 Remove the part
a
in step 2.
4 Remove the battery, and cut off the wires one by one with
scissors.
F
To remove the battery when disposing of
this unit
The following instructions are not intended for repairing
purposes but for the disposal of this unit. This unit is not
restorable once disassembled.
• When disposing of this unit, take out the battery installed in
this unit and recycle it.
Troubleshooting
(
l
Front page)
D