Charging the battery

Fully charge the battery when using for the first time.
When the rechargeable battery is running low, the voice guidance will play the message “Low battery”, and the indicator lamp will flash in red. Charge the battery as soon as possible.
It takes about 3.5 hours maximum to charge the battery fully. (This time may vary depending on usage conditions.)
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.

  1. Connect the included USB charging cable (USB Type-C 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, insert it directly (horizontally).

    1. USB Type-A
    2. USB Type-C

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

    • While charging, the indicator lamps light as follows. (It may take several seconds for the indicator lamps to light.)
    Indicator lamp Status
    Lit red Charging
    Off Charging complete
    Flashing red Charging error[1]

    [1] The 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.

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

  4. Disconnect the USB charging cable (USB Type-C side) from the product’s battery jack.

  • If you start to charge while the product is on, it will automatically turn off.
  • 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.