... 16G for option Description: 1,OLED color display, support MP3, WMA, music files and so on; 2 ... to repeat fragment repetition contrast, the true digital repeat function to support the text in multiple languages; 5, ... 1.When you charging for the mp3 player,pls turn on the switch.2.When you charging connect ... 4 hours.Otherwise it will extremely easily caused the built-in lithium battery failure and damage.3 ...