... Audio playback: MP3 WMA ACC FLAC formats8. Built-in sound : Normal,rock,popular,classic,custom heavy bass,jazz, ... Play - FX mode9. Custom sound :support10.Sound effect:RM,RMVB,AVI,DIVX,MKV,MOV,MP4 ... high speed16. Earphone: 3.5mm out 17. Built-in battery:3.7V high power lithium battery18. working ... 40°C19.OS:Windows2000/XP/Vista 20.Built-in 2000games inside 21.Game fuction:32bit Why you choose ...