1.Music Format : MP3 2.Paint: Alloy surface 3.Chip: Skylark chip 4.Playing time: Can continuously play music for about 900 minutes after fully charged 5.Electronics disk： mobile storage support 6.EqualizerMode: 5 different EQ modes (Jazz/Classic/Rock/POP/Normal) 7.Volume： 32 step volume adjustment 8.PC port： USB high-speed transit 9.Battery： Rechargeable battery with USB port 10.Battery Charge Time: About 3 hours 11.Battery Charge Current: About 140 mA 12.Operating System： Windows 98/Me/2000/XP