Specification :

1. 100% new high quality nano 4th style MP3 Player

2. Build in Rechargeable Lithium-ion Battery.

3. The function similar to Ipod Shuffle 2nd.

4. 1 GB model holds up to 240 songs.

5. supports MP3, MP3 VBR, AAC,M4A, M4B, M4P and WAV

6. Up to 4 hours of continuous playback with rechargeable lithium-ion battery .

7. USB 2.0 compatibility through integrated USB connector

8. This device has no such restrictions in fact you can hook it up to any computer you come across and put the files directly on the device

9. Personal Mass Storage. Work like a Flash Memory Storage

10. Supports Windows Vista/XP/2000/98, Mac OS 10.3 above.