• 1. USB: USB flash drive port, can play MP3 format files from USB flash drive.
• 2. FM/AM: FM/AM Radio function, can listen AM/FM radio programs
• 3. LARGE LED Screen Display function; Built-in Rechargeable 800MAH Li-ion Battery
• 4. TF CARD Slot: Support media content Micro SD Card(TF Card),U Disk. nice for play music and language study.
• 5. 3.5MM JACK: Fit for any audio source that uses a standard 3.5 mm jack, can conntact your PC iPod IPhone and other android phones(Package without audio cable)
• 
  FM fre:87.5-108mhz
  AM fre:522-1710KHZ
  Charge voltage:DC 5V/500ma
  
  What`s in box?
  1*Speaker
  1*USB cable
  1*Liion 3.7v 800mah battery
  1*user manual