Storage:TF flash memory/NAND FLASH (optional)                                                                                                                                                                                                                            1. Support MP3, WMA format                                                                                                   
2. Can plug TF card expansion memory capacity of
3. Plug headphones to use: 3.5 jack                                                                                  
4. 1.5W high \ low frequency trumpet, unplug the headset can be converted to the speaker
5. Small and portable, ideal for outdoor sports and family use
6. Playback time; 6-20 hours                                                                                                         
7.Perfect sound, unprecedented shock!!