THE CHARGER WHICH IS CONNECTED TO THE WALL OUTLET IS CALLED AC ADAPTOR.
THE CHARGER WHICH IS CONNECTED TO THE COMPUTER IS CALLED A USB CABLE.

– First connect the device to the computer
Can you please connect the Mp3 player to the computer using USB cable.
– Inform to charge In this case for the very first time you need to
connect the device to the computer and charge it for 8-9 hrs
– From the next time Now from the second time you need to charge the unit for 4-5hrs.