1. use the standard micro usb.

2. it can decode and play mp3 format audio when put usb/ tf card into the slot.

3. aux line in slot.

4. when play music, press short for last song, long press to tiurn down the volume.

5. when play music, press short for next song, long press to tiurn up the volume.

6. solar panels

7. in the fm mode, put in aux cable to get better fm radio station.