The SD card is a miniature object. Keep it out of the reach of children for fear
that children swallow it!
Ensure that the plug of the charger, the plug of the earphone, and the plug of
the USB cable are inserted in the right direction. Inserting them in a wrong
direction may cause charging failure or other problems.
Before the charging, ensure that the standard voltage and frequency of the
local mains supply match the rated voltage and power of the travel charger.