4 / 12 Insert the plug of the travel charger to an appropriate poweroutlet.Note:Ensure that the plug of the charger, the plug of the earphone, andthe plug of the USB cable are inserted in the right direction. Insertingthem in a wrong direction may cause charging failure or other problems.Before the charging, ensure that the standard voltage andfrequency of the local mains supply match the rated voltage and powerof the travel charger.