> Charging


When using a commercially available USB conversion AC adapter, make sure to choose one with an output voltage of DC 5 V and output current of 1 A and above. Otherwise, it may result in malfunction or abnormal heating.

Use only the supplied charging cable to charge this unit.

This unit can be used while charging is in progress.

Using the supplied charging cable, connect this unit and a commercially available USB conversion adapter.

1Connect the charging cable provided to start charging.

Insert the USB AC adapter into the AC outlet to start charging.

charging 2 No-PC charge GG-01W + Charge 2 GG-01W


During charging, the indicator lights up.

The charging time is approx. 3 hours. When charging is complete, the indicator goes out.

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  • charging_2_GG-01W
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Checking Remaining Battery

By pressing the power button (Icon_POWER_Button) while the power of the headphone is on, the indicator flashes and a beep sounds to indicate the remaining battery level.

Battery Level

Indicator Display

Beeping Tone

50 to 100 %

Flashes 3 times

Beep beep beep

10 to 50%

Flashes twice

Beep beep

5 to 10%

Flashes once


0 to 5%

Lights up for 1 second

Beep (for 1 second)

When the battery level is 0-5%, the indicator will light up for 1 second every 15 minutes and the unit will beep for 1 second.

If the unit is not charged during usage, the indicator will flash slowly.

Charging may stop if the temperature exceeds the charging temperature range (5 °C (41 °F) to 35 °C (95 °F)). (The indicators flash in red.) In that case, perform charging within the charging temperature range.

To prevent deterioration of the battery, charge the headphone once every 6 months when the headphone has not been used for a long period of time.