... menu7. Audio playback: MP3 WMA ACC FLAC formats8. Built-in sound : Normal,rock,popular,classic,custom heavy bass,jazz,Play ... :support10.Sound effect:RM,RMVB,AVI,DIVX,MKV,MOV,MP4 and other format video conversion broadcast recording time long time recording Play - FX audio format 11 ... USB2.0 high speed16. Earphone: 3.5mm out 17. Built-in battery:3.7V high power lithium battery18. working temrature: - ...