The decription of Multi-function MP3 FM radio calculator:

1. 12-digit large  screen display

2. Full calculation & memory function

3. LED time display ,hour& minute

4. Plays MP3 files in TF card and USB Drive

5. Audio line-in for stereo output,plug& play for PC,MP3 ,Smartphone,etc.

6. Resume playing from last song paused or shut down

7. The radio frequency range :87.5HZ--1008HZ

8. Detachable rechargeable battery,environmental friendly and cost saving

9. First time 12hours,normal is 4 hours

10. USB line,Lithium battery,adaptor connection