Visual Land VL-857 BLACK. Storage media: Flash, 2 GB. File formats: MP3, WMA, WAV, MPEG4. Audio: 20 - 20000 Hz, 85 dB. Record modes: 200 h. Energy management: 8 h. Weight & dimensions: 60 g, 51 mm, 6.5 mm, 70 mm. System requirements: 32 MB, 166 MHz. Other features: Wired, MP4, MP3, WMA, WAV, Windows 98SE, ME, 2000, XP, 5mW+5mW, USB, USB