Mp3 Reading speed: 900kb per second maximum (USB1.1) Writing speed: 3,200kb per second maximum (USB 1.1) Automatic power-off Aluminum and plastic colorful housing design MP3 and WMA and WAV music player A-B repeat function USB flash driver (mini USB) Digital voice recording Internal memory: 128M, 256M, 512M, 1G and 2G Internal FM radio: 87.5 to 108MHz (auto scan, 20 sets memorized tune) Mutiple-language display Graphic display (with seven backlight) Digital tempo control at voice mode (normal or slow speed) Equalizer (normal, rock, jazz, classical and pop) Utility program (format program, Windows 98 driver program)