iAudio U2 1 GB Digital Music Player Supports MP3, MP2, WMA, ASF and WAV; Playback, Voice Recording, FM Radio, Listening and Recording, Direct MP3 Encoding, Removable Disk Built-in 1 GB Flash Memory Long Playback Time: Up to 20 hours USB 2.0 Interface 4 Lines of Graphic LCD (Indigo Blue Backlight)