Built-in FM and 7-color backlight option USB 2.0 version with capacity: 128MB/ 256MB/ 512MB/ 1GB Features and specification Voice recording function (VOX Technology, support up to 36 hours long time recording) ID3 supported (Song title display) Lyrics Display of the Whole song Multiple-Language Display: Chinese, English, French, Italian, Czech, German, Spanish, Swedish, Japanese, Korean, Russian, Dutch, Portuguess, Danmark, Polish and so on. 7-Mode Equalizer: Natural, Pop, Classic, Jazz, Rock, Soft, DBB and User External data storage Nano-material made screen, Backlight time/contrast adjustable MP3/WMA playback USB interface Hold function - Prevents accidental key actions Intro play: 10sec in each track One AAA alkaline battery play over 10 hours Operating system: Windows 98/Me/2000/XP (No driver is necessary is for Windows 2000, ME & XP) Audio port: 3.5 mm headphone jack Player Size: 2.0 x 3.1 x 9.5 cm Weight: 2.5 oz S/N ratio: 90dbo Total Harmonic Distortion: (@1kHz): <0.25% Channel Separation: >40dB Bit/rate: 32 to 320Kbps Freq. response: 20Hz to 20Khz Accessories: (Original Retail Box) CD Driver Neck Strap Earphones USB cable Battery User Manual (English)