Audio-technica ATH-CKR55BT User Manual

ATH-CKR55BT

Wireless Headphones

User Manual

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 will 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 product

• 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 eartips out of the reach of small children.

• 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.

• 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.

• Temporarily discontinue use if you getting itchy by its wearing
stuffiness.

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Safety precautions

Cautions for rechargeable battery

The product is equipped with a rechargeable batter y (lithium polymer battery).

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

• If batter y 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 batter y 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 R.S.S. 247.
Operation is subject to the following conditions: (1) This

device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference which may cause undesired operation.

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.

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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 connecting the
product.

• 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. Additionally, do not allow the
product to get wet.

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

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

• When you are not using the included cable or USB charging
cable, disconnect it from the product.

• 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 batter y may be reduced, or the
rechargeable battery may no longer be able to be charged.

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 remote and the Bluetooth device.

Remote

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Part names and functions

Left/right (L/R) indicator

Power supply/control button

Use to turn the power supply ON/OFF, play/
pause music and videos, and answer/end
phone calls.

Volume buttons

Adjust the volume using + and –.

Indicator lamp

Displays the operating status and battery
level of the product.

Battery jack

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

Housing

Battery case

Bushing

The left bushing
has a protrusion
for distinguishing
between the left and
right.

■ Included accessories

• USB charging cable
(30 cm (1'))

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

• Eartips* (XS, S,
M, L)

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• Clip • Pouch