wireless on-ear speakers
Online Instruction Manual
Precautions
WARNING
  • Adjust speaker sound to the proper volume. Loud sound may damage your ears.
  • This unit should not be used by persons who have heart pacemakers installed, since adverse affects could occur.
  • Do not use this unit in hospitals or clinics, or near medical equipment.
  • To prevent a fire hazard, do not place any naked flame sources (such as a lighted candle) on the equipment.
  • A warning not to expose the battery (battery pack or batteries installed) to excessive heat or cold such as direct sunlight or fire.
  • When using the headphones in an aircraft cabin, be sure to follow any instructions of the cabin crew.
CAUTION
  • Never inspect the inside OR remodel this machine. If the customer remodels this machine, NTT sonority will no longer guarantee its performance.
  • If any itching or skin discomfort occurs during use, cease use immediately.
Precautions for use
  • Subjecting the device to a strong force or impact may impair the appearance or performance of the device, resulting in malfunction or damage.
  • The microphone may be damaged if sweat or moisture is allowed inside. Take particular care when using the earphones in conditions of rain, lightning, near the ocean, river, or lake.
  • The ear cushion cannot be removed. Forcibly removing it will result in damage. If it is dirty, wipe the dirt off with a soft, dry cloth. When doing so, do not blow air into the speaker unit.
  • In very dry environments, static electricity accumulated in the human body may cause tiny shocks to be felt at the ears.
  • This product is not edible. Place out of reach of small children to prevent accidental ingestion of small parts.
  • When storing devices in a bag, disconnect the plugs from the connected component.
  • Leaving the charging terminal parts in a dirt state may cause a contact failure, malfunction, or fire. Furthermore, allowing metal to contact the terminal parts may cause a malfunction or fire. Wipe them occasionally with a soft cloth to keep them clean.
Operating Environment
Operating environment temperature and humidity: +5 °C to +35 °C (+41 °F to +95 °F); less than 85 % RH (cooling vents not blocked) Do not install this unit in a poorly ventilated area, or in locations exposed to high humidity or direct sunlight (or strong artificial light), or low temperature environments.
Information to User
Alterations or modifications carried out without appropriate authorization may invalidate the user's right to operate the equipment.
Note Internal Rechargeable Lithium-ion Battery
This device uses an internal rechargeable lithium-ion battery that should last the lifetime of the device. If you suspect your battery may be dead, try charging it several times. If the battery does not recharge, please contact us for repair information.
Use LPS (100W less) power PS2 products
WARNING/DISPOSAL OF UNIT
Please do NOT attempt to change the battery yourself. If the battery has died, you should follow the disposal instructions below:
  • Never dispose of used batteries/electronics with ordinary solid wastes, since they contain toxic substances.
  • Always dispose of used batteries/electronics in accordance with the prevailing community regulations that apply to the disposal of batteries/electronics. If there are no local regulations concerning battery/electronics disposal, please dispose of the device in a waste bin for electronic devices.
  • Many electronics retailers now recycle batteries and other electronic devices at no charge. Check to see which ones in your area do so.
Leak-resistant construction
This product has been manufactured in accord with the leak-resistant standard IPX5* established by the International Electrotechnical Commission (I EC), but it may be damaged if splashed with or immersed in water.
  • When the unit is sprayed for a minimum of 3 minutes from all practicable directions with a stream of water delivered at 12.5 liters/min from ø 6.3 mm diameter nozzle at distance of 2.5 m, the performance of the unit shall not be impaired (although some water may penetrate).
Other precautions
  • The cover of the USB port plays an important role in maintaining water resistance performance. Before using the earphones, check that the cover is closed without any gap.
  • These headphones have been designed to resist the entry of perspiration and water, it is not completely waterproof. If used underwater exposure to large amounts of liquid can result in damage due to leaking into the headphones.
  • This unit is not designed to resist heat and humidity. As a result, do not use in a sauna, and do not use hair dryers or other heating devices to dry the unit.
  • In cold regions or other cold places, there is a risk of freezing if moisture is left adhered. This could cause a failure, so be sure to wipe off any moisture after use.
The Safety of Your Ears is in Your Hands
Get the most out of your equipment by playing it at a safe level – a level that lets the sound come through clearly without annoying blaring or distortion and, most importantly, without affecting your sensitive hearing. Sound can be deceiving. Over time, your hearing “comfort level” adapts to higher volumes of sound, so what sounds “normal” can actually be loud and harmful to your hearing. Guard against this by setting your equipment at a safe level BEFORE your hearing adapts.
ESTABLISH A SAFE LEVEL:
  • Set your volume control at a low setting.
  • Slowly increase the sound until you can hear it comfortably and clearly, without distortion.
  • Once you have established a comfortable sound level, set the dial and leave it there.
BE SURE TO OBSERVE THE FOLLOWING GUIDELINES:
  • Do not turn up the volume so high that you can’t hear what’s around you.
  • Use caution or temporarily discontinue use in potentially hazardous situations.
  • Do not use headphones while operating a motorized vehicle; the use of headphones may create a traffic hazard and is illegal in many areas.
Informational Note for Customers in U.S.A. Only:
FCC Caution
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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.
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.
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.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines as this equipment has very low levels of RF energy.
FCC ID : 2A58O-MBN001
WARNING: Risk of Cancer and Reproductive Harm From Lead Exposure - www.P65Warnings.ca.gov.
Informational Note for Customers in EU Only
Information for users on collection and disposal of old equipment and used batteries
These symbols on the products, packaging, and/or accompanying documents mean that used electrical and electronic products and batteries should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products and used batteries, please take them to applicable collection points, in accordance with your national legislation.
By disposing of these products and batteries correctly, you will help to save valuable resources and prevent any potential negative effects on human health and the environment which could otherwise arise from inappropriate waste handling.
For more information about collection and recycling of old products and batteries, please contact your local municipality, your waste disposal service or the point of sale where you purchased the items.
These symbols are only valid in the European Union.
For countries outside the European Union:
If you wish to discard these items, please contact your local authorities or dealer and ask for the correct method of disposal.
Note for the battery symbol (bottom two symbol examples):
This symbol might be used in combination with a chemical symbol. In this case it complies with the requirement set by the EU Battery Directive for the chemical involved.
To prevent possible hearing damage, do not listen at high volume levels for long periods.
Declaration of Conformity with regard to the RE Directive 2014/53/EU•RoHS Directive 2011/65/EU
Hereby, NTT sonority, Inc. declares that the [*] is in compliance with Directive 2014/53/EU and RoHS Directive 2011/65/EU.
The full text of the EU declaration of conformity is available on our website.
[*] : MBN001CA, MBN001BA
Maximum radio-frequency power transmitted in the frequency band(s) 2 400 〜 2 483.5MHz:8.5 dBm
Introduction
Package contents
(1) Main unit
 
 
(2) Cord clip
 
 
(3) USB cable (USB Type-A - USB Type-C®)
 
 
(4) Quick start guide
 
 
(5) Safety guide x 2
 
 
 
 
Part names
  1. Speaker
  2. Left/right label
  3. Sliders
  4. Multifunction button
  5. Status indicator
  6. (-) button
  7. (+) button
  8. Microphone
  9. USB connector cover, USB charging connector (USB Type-C®)
  10. Stoppers
Stoppers
This product includes stoppers to prevent the cord from slipping.
They are already fitted to each end of the cord when the product is unpacked. Adjust them to the desired position for use.
<Note>
  • Do not pull the stoppers and cord too hard. Doing so may cause a wire break, damage, or failure.
  • The stoppers may be ineffective due to the environment or material. The stoppers may not be very effective when used with a large amount of sweat on them or in the rain, or due to the material of your clothes.
Turning power on/off
How to turn the power on
  1. While the power is off, press and hold the multifunction button until the status indicator lights.
  2. When the status indicator lights, release the multifunction button.
    A startup tone sounds and the power turns on.
How to turn the power off
  1. While the power is on, press and hold the multifunction button until the status indicator lights.
  2. When the status indicator lights, release the multifunction button.
    A shutdown tone sounds and the power turns off.
Auto power off function
This product includes an auto power off function.
If 5 minutes continue without connecting to a device while the product is powered on, the power turns off automatically.
Wearing
These earphones are open-ear type. They are worn such that the speaker fits over the ear canal.
Before putting them on, check which are the left and right earphones.
Place the earphones over the ear from the front so that the speaker is above the ear canal.
 
Do not apply excessive force to the earphones while wearing them or after putting them on. Doing so may cause a failure.
If they are not put on properly, they may fall off.
Take care not to put on the earphones with the left and right reversed.
Excessive force
Misaligned wearing
Earphones in the wrong ears
Other precautions
The ear cushions are not consumables and cannot be detached.
Attempting to detach them forcibly may result in a loss in the ability to retain waterproof functionality, causing damage or failure.
If they are dirty, wipe off the dirt with a dry, soft cloth. When doing so, take care not to apply an excessive force.
The USB cover is an important part for retaining waterproof functionality. Check that it is closed without a gap when using the earphones.
Status indicator display
Color and pattern of status indicator
Earphone status
Slow light blue blinking
In connection standby status.
(Power will automatically turn off after approximately 5 minutes)
Blinks red and blue alternatively
In pairing mode.
Slow white blinking
Connected to a device.
Fast white blinking
Receiving a call.
Lit red
Microphone muted.
Slow red blinking
Low battery.
Slow green blinking
Charging.
Lit green
Charging completed.
How to charge
Charging
Before using your earphones for the first time, charge them using the included USB cable.
  1. Open the USB connector cover of the earphones.
  2. Connect one end (USB Type-C end: ①) of the included USB cable to the USB connector of the earphones, and the other end (USB Type-A end: ②) to a USB port on a PC or similar device.
    The status indicator on the earphones will slowly blink in green.
    When the light remains on, charging is complete.
Charging takes approximately 2 hours to complete.
When charging completes, disconnect the USB cable and firmly close the USB connector cover.
When the remaining battery is low, the status indicator will be slowly blink in red, and a notification tone will sound.
  • The charging time may vary depending on the temperature and usage frequency.
<Note>
  • Ensure that you use the included USB cable when charging. Charging may not be possible if other than the included USB is used.
  • When inserting a USB cable into a USB port, ensure that it is inserted straight (horizontally), and all the way in.
  • Charge this product in a location that is away from direct sunlight and is well ventilated (5°C/41°F to 40°C/104°F).
  • When charging by connecting to a PC, charging may not be possible while in power saving mode or when the power is off.
  • Do not use the USB cable while it is bent or bundled. Doing so may cause a fire or electric shock.
  • Pay attention to the following points when storing for a long period of time. Failure to do so may result in rapid battery degradation, or reduced available operation time.
    • Do not store in locations with high humidity or temperatures (such as within a car or where subject to direct sunlight).
    • Do not store when either fully charged or fully discharged.
How to connect
Pairing
Connecting these earphones to a Bluetooth device first requires that they be paired.
This means that using the same Bluetooth device at a later date will not require pairing operations again.
To pair with subsequent Bluetooth devices, or to switch between connected devices, see “Re-pairing.”
Pairing:
Bluetooth devices require that devices to be connected wirelessly be first registered with each other. This registration process is called “pairing.”
Before pairing
  • Also read the instruction manual of the Bluetooth device to be connected.
  • Perform pairing when the device to pair and the earphones are within 1 m of each other.
How to pair
  1. Turn on the power of the earphones.
    When you use the earphones for the first time, they will automatically enter pairing mode when the power is turned on.
    From the second time, press and hold the multifunction button for approximately 5 seconds while the power is off to switch to pairing mode.
    In pairing mode, the status indicator will blink red and blue alternately.
    If the earphones are left in pairing mode for approximately 1 minute, they will enter the connection standby status.
    To switch to pairing mode again, press and hold the multifunction button for approximately 3 seconds until a "beep" is heard.
    If the earphones are left in the connection standby status for approximately 5 minutes, the power will turn off automatically.
  2. During pairing mode, put on the earphones.
  3. Turn on the power of the Bluetooth device (device to be connected), open its Bluetooth settings screen, and search for the earphones.
  4. When [nwm MBN001] is displayed on the screen of the device to be connected, select it.
    When a notification tone sounds in the earphones, pairing is complete.
  • If [nwm MBN001] is not displayed on the screen of the device to be connected, repeat this procedure from step 1.
  • If you are asked to enter a pass key (*) during pairing operations, input “0000”.
    • The pass key may also be referred to with terms such as pass code, PIN code, PIN number, or password.
<Note>
  • if you are unable to connect the devices, perform pairing again.
  • Some Bluetooth devices may increase their volume when paired with this product. After pairing is complete, check the volume before use.
  • This product can register its pairing information with up to eight Bluetooth devices. Pairing with a ninth device will delete previously registered device pairing information. In order to reconnect a device that has had its pairing information deleted, perform pairing again.
Pairing using the nwm Connect app
Pairing can be performed using the dedicated nwm Connect app. For details, see “nwm Connect App.”
Re-pairing
If connection with a paired Bluetooth device is no longer possible, or to connect to a second or subsequent device, perform pairing again.
  1. Turn on the power of the earphones.
  2. Press and hold the multifunction button of the earphones for approximately 3 seconds until a "beep" is heard.
  3. When you hear the sound, release the multifunction button.
    The status indicator blinks between red and blue alternatively, and the earphones enter pairing mode.
    When entering pairing mode, a notification tone sounds.
    Next, perform pairing as described in step 2 onward in “How to pair.”
Re-pairing will also be required in the following instances.
  • If the product has been reset
  • If the Bluetooth connection registration information in the paired device has been deleted
  • If there is a significant distance between this product and the device to be connected
If the headphones do not switch to pairing mode despite pressing and holding the multifunction button until a "beep" is heard, there may not be a device that can be connected in the surroundings.
In this case, first try turning the power of the earphones off and then press and hold the multifunction button for approximately 5 seconds until the state switches from power-on to pairing mode. The status indicator will blink red and blue alternately and the earphones will enter pairing mode.
When the status indicator blinks alternately, release the multifunction button.
For the subsequent procedure, see from step 2 of "How to pair."
Switching between paired devices
  1. On the Bluetooth setting screen of the device currently connected to the earphones, cancel the Bluetooth connection.
    When the connection is lost, a notification tone will sound.
  2. In the Bluetooth settings screen of the new device to be connected, select [nwm MBN001].
    When the connection is complete, a notification tone will sound.
Connecting to two devices simultaneously (multipoint connection)
This product supports multipoint connection to two Bluetooth-compatible devices simultaneously.*
While listening to music on one device, incoming phone calls on a second device can be picked up as-is.
  • Not all combinations of Bluetooth-compatible devices are guaranteed to work.
How to set up a multipoint connection
  1. Pair the product with the first Bluetooth-compatible device.
  2. Pair the product with the second Bluetooth-compatible device.
    Press and hold the multifunction button of the earphones for approximately 3 seconds until a "beep" is heard.
  3. When you hear the sound, release the multifunction button.
    The status indicator blinks between red and blue alternatively, and the earphones enter pairing mode.
    When entering pairing mode, a notification tone sounds.
    Next, perform pairing as described in step 2 onward in “How to pair.”
If the headphones do not switch to pairing mode despite pressing and holding the multifunction button until a "beep" is heard, there may not be a device that can be connected in the surroundings.
In this case, first try turning the power of the earphones off and then press and hold the multifunction button for approximately 5 seconds until the state switches from power-on to pairing mode. The status indicator will blink red and blue alternately and the earphones will enter pairing mode.
When the status indicator blinks alternately, release the multifunction button.
For the subsequent procedure, see from step 2 of "How to pair."
<Note>
  • if you are unable to connect the devices, perform pairing again.
  • With a multipoint connection, up to two Bluetooth-compatible devices can be connected simultaneously. If pairing is performed with a third Bluetooth-compatible device while two devices are already connected, one of the two currently connected devices will be automatically disconnected. When selecting the device to be connected, perform the operation from the device side.
How to use
Listening to music
Operation will differ depending on the connected device. Also check the instruction manual for the device to be connected.
  1. Turn on the power of the earphones.
  2. Put the earphones on.
  3. Connect the earphones to the device to be connected.
    If the device is the paired device, the earphones may automatically connect. If the earphones do not automatically connect, or if connecting to a device that has not been paired, see “How to pair.”
    Depending on the device to be connected, it may be necessary to set the Bluetooth profile to A2DP (Advanced Audio Distribution Profile).
  4. Operate with the buttons of the earphones.
    Multifunction button operation
    Details
    Multifunction button
    Press once
    Play/Pause
    (-) button
    Press once*1
    Reduce volume*2
    Press twice
    Return to the previous track or chapter
    (+) button
    Press once*1
    Increase volume*2
    Press twice
    Go to the next track or chapter
    • When you press and hold a button, the volume will increase or reduce continuously.
    • When the maximum or minimum volume is reached, a notification tone will sound.
    • Even when playing music, the phone function can be used, such as answering calls.
      For operations in calls, check “Calling.”
<Note>
  • Depending on the specifications of the connected device, the operations above or operations on the connected device may not be possible.
  • Depending on the specifications of the connected device, configuration of playback settings may be required. Also see the instruction manual of the device you are using.
  • Depending on the specifications of the connected device, the app used for music playback may start automatically, or play/pause may not be possible. Also see the instruction manual of the device you are using.
Calling
Operation will differ depending on the connected device. Also check the instruction manual for the device to be connected.
  1. Turn on the power of the earphones.
  2. Put the earphones on.
  3. Connect the earphones to the device to be connected.
    If the device is the paired device, the earphones may automatically connect. If the earphones do not automatically connect, or if connecting to a device that has not been paired, see “How to pair.”
    Depending on the connected device, it may be necessary to set the Bluetooth profile to HFP (Hands-Free Profile).
  4. Operate with the buttons of the earphones.
    Multifunction button operation
    Details
    Multifunction button
    Press once
    Puts the earphones in a call state when there is an incoming call*1.
    Toggles microphone mute*2 on/off each time it is clicked during a call.
    Press twice
    Declines the call when there is an incoming call.
    Ends the call during a call.
    Cancels the outgoing call when making a call.
    (-) button
    Press once*3
    Reduce volume*4
    (+) button
    Press once*3
    Increase volume*4
    • During calls, the status indicator on the earphones will rapidly blink white.
    • When the microphone is muted, the status indicator on the earphones will be lit red.
    • When you press and hold a button, the volume will increase or reduce continuously.
    • When the maximum or minimum volume is reached, a notification tone will sound.
<Note>
  • Depending on the specifications of the connected device, the operations above or operations on the connected device may not be possible.
  • Depending on the specifications of the connected device, configuration of call settings may be required. Also see the instruction manual of the device you are using.
Using the voice assistant function
Use the microphone on the earphones for voice operation.
Using the Google app
Use the Google app, included with Android smartphones and devices, for voice operations.
  1. Enable the Google app.
    On Android OS smartphones, click “Settings,” then “Apps,” then select the gear icon displayed on the upper right corner of the screen. Select “Default apps,” “Assist & voice input,” and set the “Assist app” to Google.
    The procedure above may differ depending on your Android smartphone or device. You may be required to use the most up-to-date version of the Google app. For details, refer to the instruction manual for your Android smartphone or device.
  2. Turn on the power of the earphones.
  3. Put the earphones on.
  4. Press the multifunction button of the earphones three times consecutively.
    Start the Google app, and the start-up sound is heard.
    Use of the microphone on the earphones enables voice operation.
    • To end the voice assistant function, press the multifunction button of the earphones three times consecutively.
Using Siri
Use Siri, included with iPhone, for voice operations.
  1. Enable Siri.
    On your iPhone, go to “Settings,” then “Siri & Search,” then turn on “Press Side Button for Siri” and “Allow Siri When Locked.”
    The procedure above may differ depending on the OS version of your iPhone. For details, refer to the instruction manual for your iPhone.
  2. Turn on the power of the earphones.
  3. Put the earphones on.
  4. Press the multifunction button of the earphones three times consecutively.
    Start Siri, and the start-up sound is heard.
    Use of the microphone on the earphones enables voice operation.
    • Depending on the specifications of the connected device, the operations above or operations on the connected device may not be possible.
    • To end the voice assistant function, press the multifunction button of the earphones three times consecutively.
nwm Connect App
Operations available with the nwm Connect app
This product supports the nwm Connect app.
Using this app enables a number of useful functions.
Main functions
When this product is connected via Bluetooth to a smartphone or tablet with this app installed, the following functions can be used. For details, check the app screen.
Function
Details
Check remaining battery
Check the remaining battery power of the earphones.
Change equalizer
Select from among five equalizer settings.
Firmware update
Update the firmware of the earphones.
  • Update the app to the latest version when using.
  • Functions and designs may be changed without notice.
Download the nwm Connect app
Download the nwm Connect app from the Google Play Store or the App Store, and install it on your smartphone or tablet.
For details of the nwm Connect app, see the following URL:
After installation has completed, start the nwm Connect app.
Troubleshooting
Troubleshooting
Ensure you read the instructions of the device to connect.
Power does not turn on.
  • Charge the product.
  • Try resetting the product.
I am unable to pair the earphones.
  • Keep the distance between this product and the Bluetooth device within 1 m.
  • On the Bluetooth device, delete the pairing information for these earphones, then try pairing the earphones again.
  • Confirm that the communication protocol of the Bluetooth device is Ver. 2.1+EDR or higher.
  • Configure the Bluetooth device profile. Refer to the Bluetooth device instruction manual for configuration procedures.
  • When switching between Bluetooth devices, an inability to disconnect from the Bluetooth device connected immediately before may prevent pairing. In these cases, press and hold the multifunction button. This will switch to pairing mode on the earphones, and allow pairing with the Bluetooth device to connect to.
  • Keep these earphones and the Bluetooth device to connect to away from microwave ovens, wireless LAN equipment, and other devices that emit radio waves.
I can’t hear myself/my voice is too small.
  • Before starting the call, connect to the earphones, and confirm that operation is correct before proceeding.
  • Check the input/output settings on the connected device.
  • Increase the microphone input volume on the connected device.
I can’t hear the other person’s voice/the other person’s voice is too small.
  • Turn on the power for both the earphones and the device to connect.
  • Check the input/output settings on the connected device.
  • Increase the volume on the connected device.
  • Check that the earphones and the device are connected with HFP (or a call connection).
  • After pairing between the earphones and the device to be connected is deleted, try pairing again.
There is no sound/the sound is too small.
  • Turn on the power for both the earphones and the device to connect.
  • Increase the volume on the connected device.
  • Check that the earphones and the device are connected with A2DP (or an audio connection).
  • After pairing between the earphones and the device to be connected is deleted, try pairing again.
  • Ensure that there are no obstacles such as people, metal objects, or walls between the earphones and the connected device, and bring them closer together.
The sound is clipping/there is noise/the sound is interrupted.
  • Decrease the volume on the connected device.
  • Keep these earphones and the Bluetooth device to connect to away from microwave ovens, wireless LAN equipment, and other devices that emit radio waves.
  • Move the earphones away from televisions, radios, or devices incorporating tuners. Such devices may affect the earphones.
  • Turn off the equalizer on the connected device.
  • Move the earphones and the connected device away from televisions, radios, or devices incorporating tuners. Such devices may affect both the earphones and the connected device. Ensure that there are no obstacles between the earphones and the connected device, and bring them closer together.
I am unable to charge the earphones.
  • Check that there are no problems with connection using the included USB cable.
  • Carry out charging of the earphones in a location away from direct sunlight and that is well ventilated (5°C/41°F to 40°C/104°F).
How to reset
If the product does not turn on or off, if the Bluetooth connection cannot be made or canceled, or if there is any other problem with the product’s operation, reset the product.
  1. Connect the included USB cable to the USB connector of the earphones to switch to the charging state.
  2. Press and hold the multifunction button of the earphones for approximately 10 seconds.
    When the reset completes, the status indicator blinks in pink four times and then blinks (or lights) in green.
Notifications
Precautions for use
  • Ensure you read the instruction manual of the device to connect.
  • NTT sonority, Inc. will in no way be held responsible if the memory of the device to connect is deleted.
  • When connecting, turn the volume on the connected device all the way down. Take care as the sound indicating that connection is complete may be loud.
  • Do not subject the earphones to strong impact.
  • Do not place the earphones in direct sunlight, near heaters, or in hot, humid, or dusty places.
  • The ear cushions cannot be removed. Attempting to do so will damage them. If the earphones are dirty, wipe them clean with a soft, dry cloth.
  • In dry locations, ears may experience tingling and irritation due to static electricity that builds up in the body.
  • If you feel any abnormality in parts touching your body, stop usage, and consult your doctor.
  • If earphones are used for a long period of time, they may discolor due to ultraviolet radiation (in particular, direct sunlight) or friction.
  • If the earphones are used near electronic devices or transmitters (such as cellphones), noise may be heard within the earphones. In these cases, move away from such devices.
  • If the earphones are used near television and radio antennas, noise may occur on the television or radio. In these cases, move away from such devices.
  • Do not place items susceptible to magnetic fields (such as cash cards) near these earphones. The items may be affected by magnetic fields, rendering them unusable.
  • Do not place these earphones directly on delicate materials such as marble or plain wood.
  • When using the included cable, ensure that the cable is inserted and removed by holding its connector. Pulling the cable itself can result in damage to the cable or accidents.
  • Do not charge the earphones if there is any damage to the USB cable, such as its connector being bent, or having loose connection. Doing so may result in damage such as overheating, smoking, or fire, or in electric shock.
  • Ensure that plugs are fully inserted.
  • Do not connect the USB connectors or cable if they have any water or foreign materials on them. Doing so may result in damage to the USB connector or USB cable such as corrosion, overheating, smoking, or fire, or in electric shock.
  • Ensure that the battery is recharged at least once every six months in order to preserve the built-in rechargeable battery. If the battery is left uncharged for too long, the capacity of the rechargeable battery may decrease or it may no longer be able to be recharged.
  • Carry out charging of the earphones in a location away from direct sunlight and that is well ventilated (5°C/41°F to 40°C/104°F). Doing so may result in battery degradation, meaning the capacity of the rechargeable battery may decrease, or it may no longer be able to be recharged.
  • Operate the buttons with a finger. Operating them with a ballpoint pen, pencil, or other implement with a sharp point may result in not only incorrect operation but may even damage the buttons or cause them to break.
  • This product may only be used in countries where it is compliant with or certified under the radio laws of these respective countries. The earphones cannot be used in other than countries in which they are sold.
Bluetooth
  • Bluetooth wireless technology can communicate up to a distance of 10 m line of sight, however the effective communication range may differ depending on obstacles (such as human bodies, metal objects, or walls) or radio wave interference.
  • Radio waves generated by Bluetooth devices may affect the operation of devices such as electronic medical equipment. In some cases, this may result in accidents, therefore when in the following locations turn off the power to Bluetooth devices.
    • Within hospitals or clinics
    • Near priority seating on trains
    • In locations such as gas stations that have flammable gases
    • Near automatic doors or fire alarms
  • The characteristics of wireless technologies mean that audio playback on the earphones may be somewhat delayed in comparison to audio playback on the transmitting side. Therefore, video and audio may be out of sync when watching videos or playing games.
  • These earphones support security functionality that is in accordance with the Bluetooth standard for communications using Bluetooth wireless technology, however depending on settings, security may not be sufficient. Ensure care when using Bluetooth communications.
  • Be aware that NTT sonority, Inc. will in no way be held responsible for any leakage of information resulting from the use of Bluetooth communications.
  • This product is not guaranteed to achieve a Bluetooth connection with all Bluetooth-supported devices.
    • Bluetooth devices to connect must conform to the Bluetooth standard defined by Bluetooth SIG, Inc., and have obtained certification.
    • Even if the device to connect conforms to the Bluetooth standards above, its characteristics and specifications may differ, resulting in it being unable to connect, or having different operation methods, display, and behavior.
    • Depending on the connected device and communications environment, noise may be heard during hands-free calling.
  • Depending on the connected device, some time may be required until communications become possible.
Trademarks
  • The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by NTT Sonority is under license. Other trademarks and trade names are those of their respective owners.
  • Apple, iPhone, and Siri are trademarks of Apple Inc., registered in the U.S. and other countries.
  • App Store is a service mark of Apple Inc., registered in the U.S. and other countries.
  • Google, Android and Google Play are trademarks of Google LLC.
  • USB Type-C® is a trademark of USB Implementers Forum.
  • The company names and product names in this manual are the trademarks or registered trademarks of their respective companies.
Warranty
The warranty period for this product is 12 months.
Please see our website for details on the warranty conditions.
  • Consumers have legal rights based on domestic law that regulates the sale of consumer goods. These rights are not affected by this warranty. (Limited Warranty for US)
Main specifications
Main specifications
Communication method:
Bluetooth Standard Ver. 5.3
Output:
Bluetooth Standard Power Class 1
Maximum communication distance:
Line-of-sight distance, approx. 10 m *1
Usage frequency range:
2.4 GHz band (2.4000 GHz to 2.4835 GHz) *2
Modulation method:
FHSS
Supported Bluetooth profiles:
A2DP, HFP, AVRCP
Supported CODEC:
SBC, AAC
Supported content protection:
SCMS-T
Battery duration:
Maximum of 20 hours continuous connection (including music playback time)
Charging time:
Approx. 2 hours
Power source:
3.7 VDC built-in rechargeable lithium-ion battery
Mass:
About 23 g (with cord)
Ear hook:
Polypropylene
Ear cushion:
Elastomer
Speaker
Type:
Dynamic
Unit used:
12 mm dia.
Playback frequency range:
100 Hz to 20 000 Hz
Microphone
Type:
MEMS
Directionality:
Omnidirectional
Accessories
Cord clip
USB cable (USB Type-A - USB Type-C®), 0.5 m
Quick start guide
Safety guide x 2
 
  • Transmission distances are guidelines. Transmission distances may vary depending on the surrounding environment.
  • This product uses the 2.4 GHz frequency band. Interference from other wireless devices such as microwave ovens that use the 2.4 GHz band may cause interruptions in audio.
*The specifications above as well as the appearance may be changed without notice for the purposes of product improvement.