SAMSUNG YP-U1X 512MB USB MP3 Player Lightweight multi-format digital audio player with LCD 512 MB memory holds 8 hours of MP3 and 16 hours of WMA audio Compatible with MP3, WMA, ASF, WAV, and Ogg Vorbis Integrated voice recorder; 8 EQ presets; 9-band user EQ controls Internal rechargeable battery with up to 13 hours of life