Panasonic RB-M500B, RB-M300B - Wireless Stereo Headphones Manual

Panasonic RB-M500B, RB-M300B - Wireless Stereo Headphones Manual

Also See for TENTATIVE RB-M500B:


Panasonic RB-M500B, RB-M300B - Wireless Stereo Headphones Manual

Part names

Part names

  1. Audio input terminal
  2. button
  3. button
  4. 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
  10. Ear pads
  11. 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. 4.5 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.

*If you press [] twice quickly, an English guidance message will be heard and you can check the battery level.

Turning the power on/off

Turning the power on/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.

Connecting a Bluetooth® device


  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.
  1. Turn on the power of the Bluetooth ® device, and enable the Bluetooth ® function.
  2. 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". (above)
  • When the power/pairing LED (blue) blinks twice every approx. 2 seconds, pairing (registration) is completed. (Connection established)

Using the headphones

Using the headphones

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)

Play / Pause:

Increase the volume:

Decrease the volume:

Forward to the start of next track:

Return to the start of current track:

Press [] (a).

Press [+] (b).

Press [-] (c).

Press and hold [+] for approximately 2 seconds.

Press and hold [-] for approximately 2 seconds.

  • The volume can be adjusted in 31 levels (16 levels during calls). When the maximum or minimum volume is reached, a beep will sound.

[RB-M500B] Bass reactor

While playing back music or videos on a device connected via Bluetooth®

Press [BASS +](d) or [BASS-](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: OffLow 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.
  • This may not be effective depending on the music or video being played back

[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.

  • The effect may not be clear, depending on the music you are listening to.

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.
  1. Start talking.
  2. 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.
    (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.
  • 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.

Restoring to the factory settings

Charge the battery before restoring the unit.

  1. While the power is turned off, press and hold [] 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 [+] and [-] 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.
    ( D )

To remove the battery when disposing of this unit

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.
  • 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.


  • 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.


Before requesting service, make the following checks. If you are in doubt about some of the check points, or if the remedies indicated do not solve the problem, consult your dealer for instructions.

No sound.

  • Make sure that the unit and the Bluetooth ® device are connected correctly. ( D )
  • Check if music is playing on the Bluetooth ® device.
  • Make sure that the unit is turned on and the volume is not set too low.
  • Pair and connect the Bluetooth ® device and the unit again. (D )
  • Check if the Bluetooth ® compatible device supports "A2DP" profile. For details on profiles, see "Listening to music" in "Operating Instructions (PDF format)". Also refer to the operating manual for the Bluetooth ® compatible device.

Cannot adjust the volume.

  • The control button does not work when the detachable cord (supplied) is used.

Low volume.

  • Increase the volume of the unit. (E )
  • Increase the volume on the Bluetooth® device.

Sound from the device is cut off. / Too much noise. / Sound quality is bad.

  • Sound may be disrupted if signals are blocked. Do not fully cover this unit with the palm of your hand, etc.
  • The device may be out of the 10 m (33 ft.) communication range. Move the device closer to this unit.
  • Remove any obstacle between this unit and the device.
  • Switch off any wireless LAN device when not in use.
  • If the unit and the Bluetooth ® device are connected via LDAC, the problem may be solved by changing the sound quality mode on the Bluetooth ® device to give priority to connection. For details, refer to the operating instructions for the Bluetooth ® device.
  • If there is more than one active Bluetooth ® device around this unit, it may be connected to the wrong one, so check that it is connected to the correct one.

The device cannot be connected.

  • Delete the pairing information for this unit from the Bluetooth®device, then pair them again. ( D )

You cannot hear the person on the other end of the call.

  • Make sure that the unit and the Bluetooth ® enabled phone are turned on.
  • Check if the unit and the Bluetooth ® enabled phone are connected. (D )
  • Check the audio settings of the Bluetooth ® enabled phone. Switch the calling device to the unit if it is set to the Bluetooth ® enabled phone. ( D )
  • If the volume of the other person's voice is too low, increase the volume of both the unit and the Bluetooth ® enabled phone.

Cannot make a phone call.

  • Check if the Bluetooth® compatible device supports "HSP" or "HFP" profile. For details on profiles, see "Listening to music" and "Making a phone call" in "Owner's manual (PDF format)". Also refer to the operating manual for the Bluetooth®enabled phone.

The unit does not respond.

  • This unit can be reset when all operations are rejected. To reset the unit, connect the unit to a computer using the USB charging cord. (The pairing device information will not be deleted.)

Cannot charge the unit.

  • Is the USB port you are currently using working properly? If your computer has other USB ports, unplug the connector from its current port and plug it into one of the other ports.
  • If the measures mentioned above are not applicable, unplug the USB charging cord and plug it in again.
  • If the charge time and operating time become shortened, the battery may have run down. (Number of charging times of the installed battery: Approximately 300)

The power/pairing LED does not light during charging. / Charging takes longer.

  • Is the USB charging cord connected firmly to the USB terminal of the computer? (B )
  • Make sure to charge in a room temperature between 10 oC and 35 oC.

The power does not turn on.

  • Is the unit being charged? The power cannot be turned ON during charging. ( B )

The audio guidance language has changed.

  • The audio guidance language can be switched.
    (Press and hold [ ] and [-] at the same time for at least 5 seconds.)



Power supply DC 5 V, 500 mA
(Internal battery: 3.7 V (Li-polymer))
Operating time*1

Approx. 30 hours (Bass Reactor off, SBC)

Approx. 45 hours (Bass off, SBC)

Charging time*2 (25 oC (77 oF)) Approx. 4.5 hours
Charging temperature range 10 oC to 35 oC (50 oF to 95 oF)
Operating temperature range 0 oC to 40 oC (32 oF to 104 oF)
Operating humidity range 35 %RH to 80 %RH
(no condensation)
Mass [RB-M500B]
Approx. 316 g (11 oz) (without cord) [RB-M300B]
Approx. 296 cord) g (10.4 oz) (without cord)


Frequency band 2402 MHz to 2480 MHz
Supported profiles A2DP, AVRCP, HSP, HFP
Supported codec SBC, AAC

Headphone section

Impedance 32 Ω (Power off, with cord)

Speaker section

Power handling capacity 1000 mW (IEC)

*1It may be shorter depending on the operating conditions.

*2 The time required to charge the battery from empty to full.

  • Specifications are subject to change without notice.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Panasonic Corporation is under license.

Other trademarks and trade names are those of their respective owners.

Siri is a trademarks of Apple Inc., registered in the U.S. and other countries.

QR Code is a registered trademark of DENSO WAVE INCORPORATED.

Other system names and product names appearing in this document are in general the registered trademarks or trademarks of the respective developer companies.

Note that the TM mark and ® mark do not appear in this document.


Read these operating instructions carefully before using the unit. Follow the safety instructions on the unit and the applicable safety instructions listed below. Keep these operating instructions handy for future reference.

  1. Read these instructions.
  2. Keep these instructions.
  3. Heed all warnings.
  4. Follow all instructions.
  5. Do not use this apparatus near water.
  6. Clean only with dry cloth.
  7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
  8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
  9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
  10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
  11. Only use attachments/accessories specified by the manufacturer.
  12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
  13. Unplug this apparatus during lightning storms or when unused for long periods of time.
  14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Safety precautions

A lithium ion battery that is recyclable powers the product you have purchased. Please call 1-800-8-BATTERY for information on how to recycle this battery.

This device complies with part 15 of FCC Rules and Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to the following two conditions:

  1. this device may not cause interference, and
  2. this device must accept any interference, including interference that may cause undesired operation.

Model: RB-M500B
IC: 216A-RB500B

This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.

This equipment complies with FCC/ISED radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines and RSS-102 of the ISED radio frequency (RF) Exposure rules as this equipment has very low levels of RF energy.

FCC Note:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

FCC Caution:
Any unauthorized changes or modifications to this equipment would void the user's authority to operate this device.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. This device may not cause harmful interference, and
  2. this device must accept any interference received, including interference that may cause undesired operation.

Suppliers Declaration of Conformity
Trade Name: Panasonic
Model No.: RB-M500B
Responsible Party: Panasonic Corporation of North America
Two Riverfront Plaza, Newark,
NJ 07102-5490

Support Contact:



To reduce the risk of fire, electric shock or product damage,

  • Do not expose this unit to rain, moisture, dripping or splashing.
  • Do not place objects filled with liquids, such as vases, on this unit.
  • Use the recommended accessories.
  • Do not remove covers.
  • Do not repair this unit by yourself. Refer servicing to qualified service personnel.

Avoid the use in the following conditions

  • High or low extreme temperatures during use, storage or transportation.
  • Disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, that can result in an explosion.
  • Extremely high temperature and/or extremely low air pressure that can result in an explosion or the leakage of flammable liquid or gas.
  • Avoid using or placing this unit near sources of heat.
  • Do not listen with this unit at high volume in places where you need to hear sounds from the surrounding environment for safety, such as at railroad crossings, and construction sites.
  • Wide band characteristic voltage equal or larger than 75 mV.
  • Keep this unit away from something susceptible to the magnetism. Such devices as a clock may not operate correctly.
  • When using this unit in an airplane, heed the instructions given by the airline company. Some airlines may forbid your using the unit. For further details, contact the airline you will be flying with.


  • Discontinue use if you experience discomfort with the ear pads or any other parts that directly contact your skin.
  • Continued use may cause rashes or other allergic reactions.

Precautions for listening with the Headphones

  • Excessive sound pressure from earphones and headphones can cause hearing loss.
  • Do not use your headphones at a high volume. Hearing experts advise against continuous extended play.
  • If you experience a ringing in your ears, reduce volume or discontinue use.
  • Do not use while operating a motorised vehicle. It may create a traffic hazard and is illegal in many areas.
  • You should use extreme caution or temporarily discontinue use in potentially hazardous situations.
This unit may receive radio interference caused by mobile telephones during use. If such interference occurs, please increase separation between this unit and the mobile telephone.
Use only the supplied USB charging cord when connecting to a computer.
This unit is intended for use in moderate and tropical climates.

Declaration of Conformity (DoC)
Hereby, "Panasonic Corporation" declares that this product is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU.

Customers can download a copy of the original DoC to our RE products from our DoC server:

Contact to Authorised Representative:
Panasonic Marketing Europe GmbH,
Panasonic Testing Centre, Winsbergring 15, 22525 Hamburg, Germany

Type of wireless Frequency band Maximum power
(dBm e.i.r.p)
Bluetooth® 2402 - 2480 MHz 4 dBm

Only for European Union and countries with recycling systems
These symbols indicate separate collection of waste electrical and electronic equipment or waste batteries. More detailed information is contained in "Owner's Manual (PDF format)".

Remove the right ear pad to view authentication information.

  1. Authentication information (a) is indicated on the speaker plate portion (b), which becomes visible when the right ear pad (R side) is removed.
  2. To attach the ear pad, fit the part d of the ear pad into the part c.
  3. Do not pull the ear pad with force when attaching.

Remove the right ear pad to view authentication information

Documents / Resources


Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Panasonic RB-M500B, RB-M300B - Wireless Stereo Headphones Manual


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