Wireless Noise Canceling Stereo HeadsetWF-1000XM4

: Turns on in green / : Turns on in orange / : Turns on in red / -: Turns off

Indication of the remaining battery charge

When both the left and right units of the headset are stored in the charging case: Displays the remaining battery charge of the headset unit with less remaining battery charge between the left and right units of the headset.

When either the left or right unit of the headset is stored in the charging case: Displays the remaining battery charge of the headset stored in the charging case.

When both headset units are removed from the charging case: Displays the remaining battery charge of the charging case.

When the lid of the charging case is opened or closed, or when the USB Type-C cable is removed after charging is complete, the indicator lights up as follows depending on the remaining battery charge.

• When the headset is stored in the charging case and the battery of the headset is fully charged / When the headset is not stored in the charging case and the battery of the charging case is fully charged
  (lights up in green for about 6 seconds)
• When the headset is stored in the charging case and the remaining battery charge of the headset is 94% or less / When the headset is not stored in the charging case and the remaining battery charge of the charging case is 30% or less
  (lights up in orange for about 6 seconds)

When the headset is removed from the charging case, or when the headset is stored in the charging case, the indicator lights up as follows depending on the remaining battery charge.

• When the headset is stored in the charging case and the battery of the headset is fully charged / When the headset is not stored in the charging case and the battery of the charging case is fully charged
  (lights up in green for about 3 seconds)
• When the headset is stored in the charging case and the remaining battery charge of the headset is 94% or less / When the headset is not stored in the charging case and the remaining battery charge of the charging case is 30% or less
  (lights up in orange for about 3 seconds)

Charging

You can check the charging state.

• While charging the headset / While charging the charging case
  (lights up in orange)
• When the battery is fully charged when charging starts on the headset/charging case
  - - - (lights up in orange for about 1 minute, and then turns off)
• When the battery becomes fully charged and charging is complete
  - - - - - - (Turns off)
• During wireless charging, when charging is switched to charging from a wall outlet using a USB Type-C cable / when the lid of the charging case is opened or closed / when the headset is set to or removed from the charging case
  - - - (turns off for about 0.3 seconds, and then lights up in orange)
• Abnormal temperature
  - - - - (repeatedly flashes twice in red)
• Abnormal charging
  - - - - (repeatedly flashes slowly in red)

Other

• Resetting completed
  (flashes 4 times in green)
  For details, see “Resetting the headset”.
• Initialization completed
  (flashes 4 times in green)
  For details, see “Initializing the headset to restore factory settings”.