Charging the battery
14
3
Connect the included USB charging cable (USB Type-A side) to the computer to start charging.
While charging, the indicator lamp on the charging case lights/flashes as follows. (It may take several seconds
for the indicator lamp to light.)
Indicator lamp
Indicator lamp Status
Flashing orange -> Flashing yellow ->
Flashing green
Charging
(The indicator lamp flashes orange when the battery level is low
and changes to yellow then green as the battery level increases.)
Lights in green for 7 seconds, and then
turns off
Charging complete
Flashing orange (twice) Battery has no power
Flashing orange quickly Charging error
[1]
Flashing red Error detected
[2]
[1] The charging case or headphones may be hot. Allow the temperature of the product to cool sufficiently before charging in a well-ventilated
place (10 to 35°C (50 to 95°F)) away from direct sunlight.
[2] Discontinue use of the product and contact your local Audio-Technica dealer for repair.
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.
Always make sure the headphones are not wet before charging. The headphones may not operate correctly
or may not turn on if they are wet. Wipe the headphones with a dry cloth, shake them multiple times to
remove any excess water, and allow the headphones to dry thoroughly before charging.
Charging headphones without the USB 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.
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