5
Charging the battery
• Fully charge the battery when using for the first time.
• When the rechargeable battery is running low, the product will beep through the headphones, and an indicator lamp
will flash in red. When these beeps sound, charge the battery.
• It takes about 3 hours to charge the battery fully. (This time may vary depending on usage conditions.)
• While charging the battery, the product’s Bluetooth connection remains disabled and therefore the product cannot be
used.
1. Connect the included USB charging cable (micro USB Type-B side) to the battery jack.
• 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, check that the jack is facing in the
correct direction before inserting it directly (horizontally).
2. Connect the included USB charging cable (USB Type-A side) to the computer to start charging.
• During charging, the 3 indicator lamps light as follows to indicate the battery level.*
1
Battery charge
status
Indicator lamps
Red
White
Off
Lamp display
Light pattern
Less than 30%
Flashing
30 to 60%
Only center lamp flashing
60 to 100%
Only right lamp flashing
Charging complete
Lit
Charging error*
2
Flashing quickly
*1 It may take several seconds for the indicator lamp to light.
*2 Charging errors are caused by battery malfunction. Disconnect the product from the computer and then contact your local
Audio-Technica dealer.
3. When charging is complete, disconnect the USB charging cable (USB Type-A side) from the computer.
4. Disconnect the USB charging cable (micro USB Type-B side) from the product’s battery jack.
Battery jack
USB port
USB Type-A
USB charging cable
(included)
Micro USB Type-B
Computer
