Specifications: 1. Support the USB/ MINI SD card / TF card, 2. Audio input, support MP3/ MP4 / PC/ mobile phone, 3. Built-in rechargeable lithium battery 4. Can play 3-5 hours 5.USB2.0 power supply interface / 3.5 Audio Interface Details: 1. Stereo sound, the appearance of novel and unique, small and exquisite workmanship; 2. Support MP3, WMA format music files; 3. Supports USB/ MINI SD / TF card, 4. Support for external MP3/ MP4 / computers and other audio input for external headsets; 5. Support 7 EQ 6. Built-in 500MAH rechargeable battery; 7. Memory function, automatically play songs from the last time to start playing; 8. Support 1GB-8GB USB/ MINI SD / TF card. 9. FM