Notes on charging the battery (NWZ-S763BT/S764BT only)

• If the Bluetooth headphones are not used for a long time, the indicator (red) may flash when you connect the Micro USB cable (supplied) to charge the Bluetooth headphones. In this case, do not disconnect the Micro USB cable from the Bluetooth headphones and wait until the indicator (red) lights up.

• If you try to charge the battery while the Bluetooth headphones are turned on, they will turn off automatically. You cannot turn on the Bluetooth headphones while charging them.

• You can also charge the Bluetooth headphones using an AC power adaptor (not supplied). For details on available adaptors, see the customer support Web site [Details].

• Charge the battery in an ambient temperature of between 5 °C to 35 °C (41 ºF to 95 ºF). If you try to charge the battery in an ambient temperature outside this range, the indicator (red) may turn off, although charging is not complete.

• If the computer enters into hibernation mode while connected to the Bluetooth headphones, charging will not be completed properly. Check the setting of the computer before charging. The indicator (red) will go off automatically, even if the computer enters into hibernation mode. Charge the Bluetooth headphones again in this case.

• Use the supplied Micro USB cable only, and connect directly to a computer. Charging will not be completed properly by an indirect connection, such as via a USB hub.