... -in-1 MP3 player: USB disk, MP3 / WMA player, repeat, recording, built-in FM radio 2) Support E-book, FM ... recording 3) Built-in flash memory: 128MB, 256MB, 512MB, 1GB, 2GB, ... : 5 ~ 384Kbps 8) Digital voice recording, 72 hours recording time for 256MB 9) Recording format: WAV 10) ACT and recording file can be played back ...