1. Music format: MP3 or WMA
2. Battery: built-in rechargeable lithium-ion battery playing up to 4 hours
3. Storage capacity: 512MB~2GB bytes
4. High fidelity earphone, timbre can compare with iPod shuffle Can be used as a portable storage disk

5. Support OS: Windows 98/Me/2000/XP/Mac OS 9.X/Linux 2.4.X