Instructions for use 1. Turn the MP3 switch on, the switch will turn ON and start playing. The status light starts to flash. 2. Press the play button again to start the pause state. 3. Press the volume to adjust the size.? 4. Adjust the songs you want to listen to before and after. 5, stop playing, press the pause first, the host is in a pause state. 6. Turn the switch to the OFF state. The shutdown is complete. Precautions for use: First, connect the computer USB interface to charge, charge the MP3 with the charger, please do not exceed 2 hours, otherwise it will easily cause the failure and damage of the MP3 built-in lithium battery. Second, please do not pay attention to the MP3 or charger indicator state when charging, 1.5 hours of electricity is full, MP3 or charger indicator will not change any state after full charge. Third, the time to connect to the USB port of the computer should not exceed 2 hours. When the MP3 is unplugged from the computer, it must be strictly in accordance with the requirements of the computer operating system. Then remove the hardware and then unplug the MP3. Otherwise, it is very easy to cause the MP3 player to lose the software program. Fourth, the new machine is in normal use, please do not upgrade the firmware of the MP3 player.