Charging the Bluetooth headphones (NWZ-S763BT/S764BT only)

The battery of the Bluetooth headphones might not be charged at time of purchase. Make sure the battery is fully charged before use.
While the Bluetooth headphones are being charged, the indicator (red) lights up [Details]. After charging completes, the indicator turns off [Details].
For details on how to charge the Bluetooth headphones, see the following topics.
Hint
  • The Bluetooth headphones (supplied) are paired with your “WALKMAN.” You can use the Bluetooth headphones immediately after charging.