Audio-technica ATH-CKS5TW User Manual

ATH-CKS5TW

User Manual

Wireless Headphones

Introduction

Thank you for purchasing this Audio-Technica product.
Before using the product, please read through the Quick Start Guide and Caution Guide, as well as this user manual
when necessary, to ensure that you use the product correctly.

Safety precautions

Although this product was designed to be used safely, failing to use it correctly may result in an accident. To ensure
safety, observe all warnings and cautions while using the product.

Cautions for the headphones

• Do not use the product near medical equipment. Radio waves
may affect cardiac pacemakers and medical electronic
equipment. Do not use the product inside medical facilities.

• When using the product in aircraft, follow airline instructions.

• Do not use the product near automatic control devices such as
automatic doors and fire alarms. Radio waves may affect
electronic equipment and cause accidents due to malfunction.

• Do not disassemble, modify or attempt to repair the product to
avoid electric shock, malfunction or fire.

• Do not subject the product to strong impact to avoid electric
shock, malfunction or fire.

• Do not handle the product with wet hands to avoid electric
shock or injury.

• Disconnect the product from a device if the product begins to
malfunction, producing smoke, odor, heat, unwanted noise or
showing other signs of damage. In such a case, contact your
local Audio-Technica dealer.

• Do not allow the product to get wet to avoid electric shock or
malfunction.

• Do not put foreign matter such as combustible materials, metal,
or liquid in the product.

• Do not cover the product with a cloth to avoid fire or injury by
overheating.

• Follow applicable laws regarding mobile phone and headphone
use if using headphones while driving.

• Do not use the product in places where the inability to hear
ambient sound presents a serious risk (such as at railroad
crossings, train stations, and construction sites).

• The product effectively shields external sound, so you may not
hear sound around you clearly while wearing the product.
Adjust the volume to a level where you can still hear
background sound and monitor the area around you while
listening to music.

• Store the product out of the reach of small children.

• To prevent damage to your hearing, do not raise the volume too
high. Listening to loud sound for an extended period may cause
temporary or permanent hearing loss.

• Discontinue use if skin irritation results from direct contact with
the product.

• If you begin to feel unwell while using the product, discontinue
use immediately.

• When removing the product from your ears, check to make
sure the eartips are still attached to the main unit. If the eartips
become lodged in your ears and you are unable to remove
them, consult a physician at once.

• If you develop an itch from wearing the product, discontinue use.

1

Safety precautions

Cautions for charging case

• Do not disassemble, modify or attempt to repair the product to
avoid electric shock, malfunction or fire.

• Do not subject the product to strong impact to avoid electric
shock, malfunction or fire.

• Do not handle the product with wet hands to avoid electric
shock or injury.

• Disconnect the product from a device if the product begins to
malfunction, producing smoke, odor, heat, unwanted noise or
showing other signs of damage.
In such a case, contact your local Audio-Technica dealer.

• Do not allow the product to get wet to avoid electric shock or
malfunction.

• Do not put foreign matter such as combustible materials, metal,
or liquid in the product.

• Do not cover the product with a cloth to avoid fire or injury by
overheating.

• When charging, make sure to use the included USB charging
cable.

• Do not charge with devices that have quick-charge functionality
(with a voltage of 5 V or more). Doing so may cause the
product to malfunction.

• Do not store the product in direct sunlight, near heating
devices, or in hot, humid, or dusty places because such storage
could cause malfunction or defect.

• Do not put it close to fire because that could cause deformation
or malfunction.

• Do not use benzine, paint thinners and electrical contact
cleaner, etc. because use of such material could cause
deformation or malfunction.

2

Safety precautions

Cautions for rechargeable battery

The headphones are equipped with a rechargeable battery (lithium ion battery).
The charging case is equipped with a rechargeable battery (lithium polymer battery).

• If battery fluid gets into eyes, do not rub them. Rinse thoroughly
with clean water such as tap water and consult a doctor
immediately.

• If battery fluid leaks, do not touch fluid with bare hands. If fluid
remains inside the product, it may cause malfunction. If battery
fluid leaks, contact your local Audio-Technica dealer.

– If fluid gets in your mouth, gargle thoroughly with clean water

such as tap water and consult a doctor immediately.

– If your skin or clothing comes in contact with fluid,

immediately wash the affected skin or clothing with water. If
you experience skin irritation, consult a doctor.

• To avoid leakage, generation of heat or explosion:

– Never heat, disassemble or modify the battery, nor dispose of

it in a fire.

– Do not attempt to pierce with a nail, hit with a hammer or

step on the battery.
– Do not drop the product or subject it to strong impact.
– Do not get the battery wet.

For customers in the USA
FCC Notice

Warning

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.

Caution

You are cautioned that any changes or modifications not
expressly approved in this manual could void your authority
to operate this equipment.

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 to 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.

• Do not use, leave or store the battery in the following places:
– Area exposed to direct sunlight or high temperatures and

humidity
– Inside of a car under the blazing sun
– Near heat sources such as heat registers

• Charge only with the included USB cable to avoid malfunction
or fire.

• The internal rechargeable battery of this product cannot be
replaced by the user. The battery may have reached the end of
its service life if the usage time becomes significantly shorter
even after the battery has been fully charged. If this is the case,
the battery needs to be repaired. Contact your local
Audio-Technica dealer for repair details.

• When the product is disposed of, the built-in rechargeable
battery needs to be discarded properly. Contact your local
Audio-Technica dealer to learn how to properly dispose of the
battery.

RF Exposure Statement

This transmitter must not be co-located or operated in
conjunction with any other antenna or transmitter used in
other systems. This device complies with FCC radiation
exposure limits set forth for an uncontrolled environment and
meets the FCC radio frequency (RF) Exposure Guidelines.
This equipment has very low levels of RF energy that is
deemed to comply without testing of specific absorption rate
(SAR).

For customers in Canada
IC statement

CAN ICES-3 (B)/NMB-3(B)
This device complies with Industry Canada's licence-exempt

RSSs. 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 of the device.

Under Industry Canada regulations, this radio transmitter
may only operate using an antenna of a type and maximum
(or lesser) gain approved for the transmitter by Industry
Canada. To reduce potential radio interference to other users,
the antenna type and its gain should be so chosen that the
equivalent isotropically radiated power (e.i.r.p.) is not more
than that necessary for successful communication.

This device complies with RSS-102 radiation exposure limits
set forth for an uncontrolled environment.

3

Notes on use

• Be sure to read the connected device’s user manual before use.

• Audio-Technica will not be liable in any way for any loss of data
in the unlikely event that such losses should occur while using
the product.

• On public transportation or in other public places, keep the
volume low so as not to disturb other people.

• Minimize the volume on your device before reproducing music.

• When using the product in a dry environment, you may feel a
tingling sensation in your ears. This is caused by static
electricity accumulated on your body, not by product
malfunction.

• Do not subject the product to strong impact.

• Do not store the product in direct sunlight, near heating
devices, or in hot, humid, or dusty places.

• When the product is used for a long time, the product may
become discolored due to ultraviolet light (especially direct
sunlight) and wear.

• If the charging case is placed in a bag while the USB charging
cable is still connected, the USB charging cable may become
caught, severed, or broken.

• Make sure to hold the plug when connecting and disconnecting
the USB charging cable. The USB charging cable may become
severed or an accident may occur if you pull on the cable itself.

• When you are not using the USB charging cable, disconnect it
from the charging case.

• When you are not using the product, store it in the included
charging case.

• If you use eartips other than those included, the headphones
may not fit into the charging case, or may not charge. Be sure
to use the included eartips.

• This product can be used to talk on the phone only when using
a mobile telephone network. Support for telephony apps that
use a mobile data network is not guaranteed.

• If you use the product near an electronic device or transmitter
(such as a mobile phone), unwanted noise may be heard. In this
case, move the product away from the electronic device or
transmitter.

• If you use the product near a TV or radio antenna, noise may be
seen or heard in the television or radio signal. In this case, move
the product away from the TV or radio antenna.

• To protect the built-in rechargeable battery, charge it at least
once every 6 months. If too much time passes between
charges, the life of the rechargeable battery may be reduced, or
the rechargeable battery may no longer be able to be charged.

About water-resistant (drip-proof) performance

• The water-resistant (drip-proof) specification of this product applies only to the headphones, not the charging case.

• The water-resistant (drip-proof) performance is designed to protect the headphones if they get wet from rain, etc. (equivalent to IPX2).
JIS/IEC protection grade IPX2 means that the headphones are protected against water droplets falling from above at a 15-degree
angle. The headphones cannot be used in hot and humid places, such as bathrooms.

• The headphones are not waterproof. Submerging them in water may cause damage.

4

For a more comfortable Bluetooth® communication experience

The effective communication range of this product varies
depending on obstructions and radio wave conditions.
For a more enjoyable experience, please use the product as close
as possible to the Bluetooth device. To minimize noise and sound
disruptions, avoid placing your body or other obstacles between
the product’s antenna (R side) and the Bluetooth device.

Antenna

5

Part names and functions

Headphones

Charging case

L/R (left/right) indicator

Housing

Cover

Charging indicator lamps

Displays the battery level of the
charging case.

Multifunction buttons

Use to turn the power supply
ON/OFF, play/pause music, and
answer/end phone calls.
Also use to adjust the volume

The L-side button has a
protrusion for distinguishing
between the left and right.

(+/–).

Indicator lamp

Displays the operating status and
battery level of the headphones.

Microphone (R side only)

Battery jack

Use to connect the included
USB charging cable and
charge the product.

■ Accessories

• USB charging cable (30 cm (12”),
USB Type-A / USB Type-C

* At the time of purchase, the M-size eartips are attached to the headphones.

TM

)

• Eartips* (XS, S, M, L) • Silicone rings

6

Charging the battery

Charging the headphones and charging case

• Fully charge the battery when using for the first time.

• If the rechargeable battery power is running low, the product will beep through the headphones, and the indicator
lamps of the headphones will flash in red. In this case, charge the battery.

• It takes about 2 hours maximum to fully charge the headphones, about 3.5 hours maximum to fully charge the
charging case. (This time may vary depending on usage conditions.)

1. Connect the included USB charging cable (USB Type-C side) to the battery jack of the charging case.

• The included USB charging cable is designed for exclusive use with the product. Do not use any other USB
charging cable.

• When inserting the USB charging cable into the USB port or battery jack, insert it directly (horizontally).

2. Connect the included USB charging cable (USB Type-A side) to the computer to start charging.

USB port

Battery jack

Computer

3. After placing the headphones in the charging case, close the cover.

USB Type-A

USB charging cable

(Included)

USB Type-C

7

Charging the battery

• During charging, the 3 charging indicator lamps light and flash as follows to indicate the battery level of the
charging case (it may take several seconds for the indicator lamps to light).

Battery (charging)
status of the
charging case

Charging indicator lamps

Lamp display Light pattern

(Fully charged)

4. When charging is complete, disconnect the USB charging cable (USB Type-A side) from the computer.

5. Disconnect the USB charging cable (USB Type-C side) from the battery jack on the charging case.

• When charging, make sure to use the included USB charging cable. The product may not charge with cables other
than the included USB charging cable.

White Off

Only left lamp flashing

Only center lamp

flashing

Only right lamp

flashing

Lit in white for 10

seconds, and then

turns off

8

Charging the battery

Charging headphones without the charging cable

A rechargeable battery is built into the charging case. If you have charged the charging case, you can charge the
headphones without using the USB charging cable.

• If the rechargeable battery power is running low, the product will beep through the headphones, and the indicator
lamps of the headphones will flash in red.

1. Place the headphones in the charging case.

• When charging, the indicator lamps of the headphones
light as follows (it may take several seconds for the
indicator lamps to light).
Lit in white : Charging
Off: Charging complete

2. Close the charging case cover.

Indicator lamps

Checking the battery level of the charging case

1. When opening/closing the cover of the charging case, the 3 charging indicator lamps light as follows to indicate the
battery level of the charging case.

Battery (charging)

status of the

charging case

(Charging required)

Charging indicator lamps

Lamp display Light pattern

White Off

Only left lamp lit

Left and center

lamps lit

All lamps lit

Only left lamp
flashing quickly
(twice in a row)

9

Connecting via Bluetooth

To connect the product to a Bluetooth device, the product needs to pair (register) with the device.

Pairing a Bluetooth device

• Read the user manual for the Bluetooth device.

• Place the Bluetooth device within 1 m (3.3') of the product to perform pairing
correctly.

• To confirm the progress of the pairing process, wear the product while performing
this procedure and listen for the confirmation tone.

1. Remove the headphones (L (left) and R (right)) from the charging case.

• The indicator lamps will flash in white.

2. Use your Bluetooth device to begin the pairing process and search for the product.
When your Bluetooth device finds the product, “ATH-CKS5TW” will be displayed on the device.

• For information about using your Bluetooth device, refer to the device’s user manual.

• This product may be displayed as "ATH-CKS5TW", "BLE_ATH-CKS5TW", or both. If both are displayed, select
"ATH-CKS5TW". If only one is displayed, select that one.

3. Select “ATH-CKS5TW” to pair the product and your Bluetooth device.

• Some devices may ask for a passkey.
PIN code, PIN number, or password.

• The product sounds a confirmation tone when pairing is complete.

In this case, enter “0000”. The passkey may also be called a passcode,

About pairing

Bluetooth ON

ATH-CKS5TW

100%12:00

When connecting a new Bluetooth device, you need to pair it with the product. Once the Bluetooth device and the
product are paired, you do not need to pair them again. The product supports multipairing, in which a connection
history is saved.
However, in the following cases you will need to pair again even if the Bluetooth device was paired once:

• If the product is deleted from the Bluetooth device’s connection history.

• If the product is sent out for repair.

• When switching to a Bluetooth device, you may not be able
to pair because the previously connected Bluetooth device
cannot be disconnected. In such cases, place the headphones
into the charging case (with battery level remaining for the
case) and press and hold (about 6 seconds) the multifunction
button on the R (right) side. The indicator lamp lights in red.
After lighting in red, the product will switch to the “searching
for devices” state and you will be able to pair with your desired
Bluetooth device.

10

Using the product

The product can use Bluetooth wireless technology to connect to your device and play music, receive phone calls, etc.
Use the product for whichever of these purposes suits your needs.
Note that Audio-Technica cannot guarantee the operation of displays, such as the battery level display, or applications
via Bluetooth devices.

Power supply ON/OFF

Power supply Operation Indicator lamps

Remove from the

charging case and

power turns on

ON*

OFF*

automatically.

1

Press and hold (for

about 2 seconds)
the multifunction

buttons to turn the

power on manually.

Place in the

charging case and

power turns off

automatically.

1

Lights in white,

then flashes in white*

2 *3

Lights in white, then turns off*

3

Press and hold (for

about 4 seconds)
the multifunction

buttons to turn

the power off

*1 If you are wearing the product, you will hear a beep to indicate when the product has turned on and off.
*2 It may take several seconds for the indicator lamp to light.
*3 For details, please refer to “Indicator lamps on the headphones” (p.15).
*4 When you turn off the R (right) side, the L (left) side also turns off automatically.

manually.

*4

11

Using the product

Wearing the product

Insert the side of the product marked "L" (LEFT) into
the left ear, and the side marked "R" (RIGHT) into the
right ear as shown in the figure.

• When worn on the ear while slightly bending the 3D
loop support included with the headphones, the fit
is stable.

Attaching/Removing the silicone rings

The 3D loop supports are attached to the headphones to provide better fit and stability. Use the included silicone rings
as needed.

1. Remove the 3D loop supports that come
attached to the headphones.

3D loop support The left bushing has a protrusion for

Align the protrusion on the

2. Attach the silicone rings to the headphones.

3. Wear the headphones.

• When reattaching the 3D loop supports, make sure to attach them correctly. If you attach them incorrectly, they will
not enter the charging case.

headphone with the notch

in the silicone ring

distinguishing between the left and

right.

The left bushing

has a protrusion for

distinguishing between

the left and right.

Make sure the shapes of headphone and

silicone ring match.

12

Using the product

Listening to music

• To connect for the first time, pair the product and your device via Bluetooth wireless technology. If you have already
paired the product and your Bluetooth device, turn on the Bluetooth device’s Bluetooth connection before turning on
the product.

• Use your Bluetooth device to start playback, referring to the device’s user manual as necessary.

Multifunction button (R (right) side)

Press Play/pause Plays or pauses music. *

Press (twice) Skip forward Plays the next track. *

Press
(three times)

Skip back Plays the previous track. *

L (Left)

Multifunction button (L (left) side)

Press Volume up Increases the volume by 1 level.

Press (twice) Volume down Decreases the volume by 1 level.

* Some controls may not be available for music playback on some smartphones.

• The volume control of some devices may not work well with the product.

(Right)

R

13

Using the product

Talking on the phone

• If your Bluetooth device supports telephone features, you can use the microphone built into the product to talk on the
phone.

• When your Bluetooth device receives a phone call, a ring tone will be heard through the headphones.

• If a call is received while you are listening to music, music playback is paused. When you finish the call, music
playback resumes. *

1

When

Receiving a call

Function Operation

Press the multifunction button on the R (right)
side headphone.

Answers the call.

Press and hold (about 3 seconds) the
multifunction button on the R (right) side

Rejects the call.

headphone.

Press the multifunction button on the R (right)
side headphone.

*2

Talking

*1 Depending on your Bluetooth device, music playback may not resume.

*2 Adjust the volume of a call on the Bluetooth device.

*3 When you hear a confirmation tone, release your finger from the multifunction button.

• The phone call controls explained above may not be available on some smartphones.

Press and hold (about 3 seconds) the
multifunction button on the R (right) side
headphone.

*3

Ends the call.

Each time you press and hold the button
(about 3 seconds),
you switch the call to your mobile phone or
to the product.

Auto power off function

The product automatically turns off after 5 minutes of not being connected to a device.

Reset function

If the product does not work, or other malfunctions occur, place the
headphones in the charging case while referring to "Charging the battery"
(p.7) for information on inserting the USB charging cable to provide
power, and then do a reset.
Disconnecting and then reconnecting the USB charging cable will reset
the product and should resolve any problem you are experiencing. If the
problem persists, contact your local Audio-Technica dealer.
Resetting does not change any of your settings (pairing information,
volume setting, etc.).

*3

14

Using the product

App for smartphones

You can use Audio-Technica’s app for smartphones for more convenient use of the product.

https://app.at-globalsupport.com

Indicator lamps on the headphones

The indicator lamp on each headphone indicates the product's status, as explained below.

Status

Pairing Searching for devices

Waiting to be connected

Connection

Connecting

Battery level Battery level low White in the pairing or connection status turns red.

Indicator lamp display pattern

White

(

15

Quickly flashing

: Gradually lights up)

Flashing

Voice guidance

The R (right) headphone plays English voice guidance in the following situations.

Situation Voice guidance

Power is turned on Power on

Power is turned off Power off

Bluetooth is connected Bluetooth connected

Bluetooth is disconnected Bluetooth disconnected

Battery level is low Low battery

Cleaning

Get into the habit of regularly cleaning the product to ensure that it will last for a long time. Do not use alcohol, paint
thinners, or other solvents for cleaning purposes.

• Wipe any dirt off the headphones and charging case with a dry cloth.

• Immediately wipe off any moisture (such as sweat) that has splashed onto the
charging case battery jack, the charging terminals, and operation controls (such
as buttons on the headphones). Failure to do so may result in a malfunction due
to corrosion.

• Natural oils from the skin are particularly likely to build up on the eartip
attachment parts (see figure at right). If these areas are not cleaned, the eartips
can become detached. Clean them regularly. Do not touch the areas where
sound is produced as they are delicate. Doing so may result in malfunction.

• If the USB charging cable is dirty, wipe the cable with a dry cloth immediately
after use. Failure to clean the cable may cause it to deteriorate and harden over
time, resulting in malfunction.

• If the USB terminal of the charging cable is dirty, wipe it off with a dry cloth.

• Clean the eartips by removing them from the headphones and manually
cleaning them with a diluted mild detergent. After cleaning, wipe dry before using again.

Eartips
attachment
part

Sound
reproduction
part

• If the product will not be used for an extended period of time, store it in a well-ventilated place free from high

temperatures and humidity.

16

Eartips

Eartip size

The product includes silicone eartips in 4 sizes (XS, S, M, and L). At the time of purchase, the M-size silicone eartips are
attached.
To ensure the best sound quality, select the eartip size that is best suited for you, and adjust the eartips inside your ears
for a snug fit. It may be difficult to hear bass sounds if the eartips do not fit snugly in your ears.

Replacing the eartips

Remove the old eartip and attach the new eartip by pushing it onto the headphone at an
angle (see figure).
Push firmly on the eartip so that the inside of the eartip expands, and push the eartip onto
the post as far as it will go.

• Periodically remove and clean the eartips as they become dirty easily. Using dirty eartips may cause the

headphones themselves to become dirty, resulting in deteriorated sound quality.

• Eartips are consumable parts that degrade through storage and use. If the eartips are loose and easily removed

or if they appear to have degraded, purchase replacements.

• When reattaching eartips that were previously removed, be sure to check that they are securely attached. Injury

or illness may occur if the eartips become detached and are left inside the ear.

17

Troubleshooting

Problem Solution

Power is not supplied. • Charge the product.

Unable to pair. • Confirm that the Bluetooth device communicates using Ver. 2.1+EDR or higher.

• Place the product and the Bluetooth device within 1 m (3.3') of each other.

• Set the profiles for the Bluetooth device. For procedures on how to set profiles,
refer to the Bluetooth device’s user manual.

• Remove the pairing information for the Bluetooth device then pair the product
with this device again.

• Place the headphones in the charging case and close the cover. Then, take the
headphones out again.

• When switching to a new Bluetooth device, you may not be able to pair
because the previously connected Bluetooth device cannot be disconnected.
In such cases, place the headphones into the charging case (with battery level
remaining for the case) and press and hold (about 6 seconds) the multifunction
button on the R (right) side. The indicator lamp lights in red. After lighting in red,
the product will switch to the “searching for devices” state and you will be able
to pair with your desired Bluetooth device.

• While searching, this product may be displayed as "ATH-CKS5TW", "BLE_ATH­CKS5TW", or both on your Bluetooth device. If both are displayed, select "ATH­CKS5TW". If only one is displayed, select that one.

No sound is heard / Sound is
faint.

L (left) and R (right) are not
connected (sound does not come
out from the L (left) side).

• Turn on the power of the product and the Bluetooth device.

• Turn up the volume.

• Make sure that this product and Bluetooth device are connected by the A2DP
(or audio connection).

• Disable pairing for this product and the Bluetooth device, then pair the product
with this device again.

• Move away from obstacles between the product and the Bluetooth device, such
as people, metal or walls, and place the product and device closer together.

• Switch the sound output of the Bluetooth device to this product.

• Check if there is no battery level remaining.

• Place the headphones in the charging case and close the cover. Then, take the
headphones out again.

• If they are not connecting even after trying the above, the L (left) and R (right)
may be disconnected. Use the following procedure to connect them manually.

- With the headphones and Bluetooth device disconnected, press the
multifunction buttons on both L and R (left and right) three times. The
indicator lamps on L and R (left and right) will change to pink, and after
a while the indicator lamp on the L (left) side will slowly flash in white to
indicate that the L (left) and R (right) are connected.

18

Troubleshooting

Problem Solution

Sound is distorted / Noise is
heard / Sound cuts out.

Cannot hear the voice of the
caller / Voice of the caller is too
quiet.

The charging case cannot be
charged.

Headphones cannot be charged. • Make sure that the product is placed in the charging case correctly.

The headphones come off my
ears easily.

• Turn down the volume.

• Keep this product away from devices that emit radio waves such as microwaves
and wireless routers.

• Keep this product away from TVs, radios, and devices with built-in tuners. These
devices can also be affected by the product.

• Turn off the equalizer settings of the Bluetooth device.

• Remove obstacles between the product and the Bluetooth device and place
them closer together. For details, please refer to "
Bluetooth® communication experience" (p.5).

• You may be able to improve the connection status by switching the connection
codec to SBC. You can change it with our smartphone app. If you are using a
connected device such as a smartphone or audio player that can change the
connection codec, you may be able to set to SBC on that connected device. For
details about the setting procedure, refer to the user manual of your connected
device.

• Turn on the power of the product and the Bluetooth device.

• Turn up the volume.

• Make sure that this product and Bluetooth device are connected by the HFP/
HSP (or call connection).

• Disable pairing for this product and the Bluetooth device, then pair the product
with this device again.

• Switch the sound output of the Bluetooth device to this product.

• Securely connect the included USB charging cable and charge the product.

• Charge the charging case.

• Wipe dirt off the charging terminal with a dry cloth.

• The 3D loop supports come attached to the headphones to provide better fit
and stability. Use the included silicone rings as needed. Refer to "Attaching/
Removing the silicone rings" (p.12)

For a more comfortable

• For details about how to operate your Bluetooth device, refer to the device’s user manual.

• If the problem still remains, reset the product. To reset the product, refer to “Reset function” (p.14) under “Using the
product”.

19

Specifications

Headphones

Type Dynamic

Driver 10 mm

Sensitivity 110 dB/mW

Frequency response 5 to 40,000 Hz

Impedance 16 ohms

Microphone

Type MEMS type

Polar pattern Omnidirectional

Sensitivity -40 dB (1 V/Pa, at 1 kHz)

Frequency response 50 to 4,000 Hz

Communication specifications

Communication system Bluetooth version 5.0

Maximum RF output 10 mW EIRP

Maximum communication range Line of sight - approx. 10 m (33')

Frequency band 2.402 GHz to 2.480 GHz

Modulation method FHSS

Compatible Bluetooth profiles A2DP, AVRCP, HFP, HSP

Support codec Qualcomm® aptX™ audio, AAC, SBC

Supported content protection method SCMS-T

Transmission band 20 to 20,000 Hz

20

Specifications

Other

Power supply Headphones: DC 3.7 V lithium ion battery/

Charging time Headphones: Approx. 2 hours* / Charging case: Approx. 3.5 hours*

Operating time Continuous transmission time (music playback): Max. approx. 15 hours*

Weight Headphones: Approx. 8 g (0.28 oz) (L side), approx. 8 g (0.28 oz) (R side) /

Water-resistant (drip-proof)
performance

Operating temperature 5°C to 40°C (41°F to 104°F)

Accessories • USB charging cable (30 cm (12”), USB Type-A / USB Type-C)

Sold separately • Eartips

* The above figures depend on operating conditions.

For product improvement, the product is subject to modification without notice.

• The Bluetooth® word mark and logos are owned by Bluetooth SIG, Inc. and any use of such marks by Audio-Technica Corporation is
under license. All other trademarks are property of their respective owners.

• Apple and the Apple logo are trademarks of Apple Inc. registered in the United States and other countries.

• The App Store is a service mark of Apple Inc.

• Google Play and the Google Play logo are trademarks of Google LLC.

• USB Type-C

• Qualcomm aptX is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries, used with permission. aptX is
a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries, used with permission.

TM

is a trademark of USB Implementers Forum.

Charging case: DC 3.7 V lithium polymer battery

(headphones), Max. approx. 45 hours* (if charging case is used in combination)

Charging case: Approx. 60 g (2.1 oz)

IPX2

• Eartips (XS, S, M, L)

• Silicone rings

Audio-Technica Corporation

2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan

©2019 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com

132417060-02-01

ver.1 2019.07.01