audio technica ATH-M20xBT Over-Ear Wireless Headphones User Guide

ATH-M20xBT
Caution Guide

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.

Safety precautions

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, produce smoke, odor, heat, unwanted noise, or show 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).

• 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 sounds for an extended period may cause temporary or permanent hearing loss.

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

• Do not catch your fingers or other body parts between the housing and the arm or inside the joints.

Cautions for rechargeable battery
The product is equipped with a rechargeable battery (lithium polymer battery).

• If battery fluid gets into the 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 the 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.

• 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.

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.
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter used in other systems.
RF Exposure Statement
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).
Contact:
Responsible Company: Audio-Technica U.S., Inc.
Address: 1221 Commerce Drive, Stow, Ohio 44224, USA
Tel: 330-686-2600
For customers in Canada ISED statement
This device contains license-exempt transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development Canada’s license-exempt RSS(s).
Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
This device complies with RSS-102 radiation exposure limits set forth for an uncontrolled environment.

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 a 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 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 product.

•  Do not charge the battery if the terminal of the USB charging cable is bent, loose, or damaged. Doing so may cause heat generation, smoke emission, fire, or electric shock.

•  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.

•  Do not charge the product if water or foreign matter is inside the battery jack or USB charging cable. Doing so may cause corrosion, heat generation, smoke, fire, or other malfunction or electric shock in the battery jack or USB charging cable.

• Charge the product in a well-ventilated place (10 to 35°C (50 to 95°F)) away from direct sunlight. Otherwise, the battery may deteriorate, possibly resulting in shorter periods of continuous use, or may fail to charge.

•  If the product is wet with sweat, wipe off any moisture with a dry cloth before charging.

If the product does not connect to a device
If pairing cannot be canceled or is not successful, you can use forced pairing mode to perform pairing again.

1. With the product turned on, press and hold (about 6 seconds) the volume buttons (+/–) at the same time.
2. The product will switch to the “searching for devices” (pairing mode) state and you will be able to pair it with your desired Bluetooth device.

If the product operates abnormally
Reset the product.

1. With the product turned on, press and hold (about 6 seconds) the volume buttons (+/-) at the same time.
2. Make sure the indicator lamp is flashing rapidly in white, and press and hold the power supply/control button and the volume up button (+) at the same time (for about 6 seconds).
3.  After the indicator lamp lights in pink, the product will restart, and the reset will be complete.
4.  Remove the product from the list of registered devices on your Bluetooth device, and perform pairing again.

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 (L side) and the Bluetooth device.

Communication specifications

Maximum RF output| 10 mW EIRP
Frequency band| 2.402 GHz – 2.480 GHz
Modulation type| GFSK, Pi/4DQPSK, 8DPSK
| 2400 – 2483.5 MHz

Warranty (Please be sure to read the notes below.) For USA Only
End-User LIMITED WARRANTY information for the USA is available at www .audio-technica.com/usawarranties. You may also contact Audio-Technica U.S., Inc. to request a written copy of the Limited Warranty at 1-330-686-2600 or via mail at 1221 Commerce Drive, Stow, OH 44224.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Audio-Technica Corporation is under license.
Other trademarks and trade names are those of their respective owners.

ver.1 2021.07.15
132513430-01-03 ver.3 2021.11.01

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