1. Support MP3/WMA format
2. USB2.0
3. Functional LED indicator
4. Build-in-rechargeable battery
5. Surface Printing:Customized or Standard
6. Coustomized Photo:Optional.
1. No screen mp3 player
2. USB interface: USB2.0
3. Support Music/Sudio formats:Mp3/WMA/WAV
4. Built-in Rechargeable Lithium battery.