1) Shell color: OSC-023M: Pearl White, White, Red, Blue, Black. OSC-023M-C: Pink, Yellow, Sky Blue, Blue, Green, Silver. 2) Memory: 128MB, 256MB, 512MB,1GB. 3) Eleven languages: Chinese simple, Chinese traditional, English, German, French, Spanish, Dutch, Italian, Portuguese, Japanese, Korean. 4) LCD Display with blue back- light /seven color back- light, four EQ choice. 5) 5EQ Selection Modes: (Normal /Jazz /Rock /Pop /Classic). 6) Digital Recording ( About 8 hours -128MB, 16 hours -256MB). 7) Input: built- in microphone. 8) Synchronous lyric, automatic power off. 9) Music formats: MP3 /WMA /ADPCM. 10) High- speed (500K bps) USB port. 11) Windows 98 /200 /ME /XP operating systems plug- and- play, no driver needed except for Windows 98. 12) Frequency responded: 20Hz- 20KHz. 13) SNR: > 85dB. 14) Accessories: Manual, Driver CD-R, Earphone, USB cable, battery. 15) Quality /Safety Certifications: FCC, CE.