Features MP3/wma/wav audio playback FM radio Voice recording OLED display USB full speed 2.0 interface Specifications Formats : MP3 / WMA / WAV Ic : SIGMATEL 3502/3503 Voice recording : IMA-ADPCM (WAV) format, 32 h for 512MB Fm radio : Auto / Manual searching / FM recording 30 presets stations / 87.5MHz - 108MHz Capacity : 512MB / 1GB / 2GB Display : 128*64 OLED display Osd menu : Multi language Play modes : repeat one / repeat all / random / A-B repeat / shuffle / preview / norma Eq modes : Jazz / pop / classic / rock / bass / normal Settings : 6 play modes, contrast, backlight, automatic power off Compression rates mp3 : 8kbps - 320kbps Compression rates wma : 8kbps - 192kbps Frequency response : 20Hz - 20kHz Signal to noise ratio : 90dB Firmware : Upgrade available. Earphone output power : Max. 9mW - 32ohms Battery : about 5 hours in play mode, li-ion battery Operating system : Windows 98/ME/2000/XP/ Mac OS Driver installation : No driver installation required on Windows ME/2000/XP/ Mac OS 9.0 above Accessories Neckless earphones Manual (CD) Quick guide Firmware upgrade