Mp3 player 1. Exquisite design Exquisite outward appearance design, appropriate feeling, comfortable operation. 2. Support multi-audio format It must be support mp1, mp2, mp3, wma, wmv, asf, wav etc. 3. Firmware updating function Provides newest promotion software for downloading in the website, realizes this device for more expansion. 4. No driver usb flash disk function No need administrators and no need drivers if in win2000 systems, you can insert pc directly for your choose. 5. The realization of two disk May use this function to hide you privacy. 6. Recording/ retake courses You can do voice recording by microphone and save as wav and act file, parts and contrast for your retake course to be realize a real digital function. 7. Seven kinds of timbres balancers Nature, rock, popular, classical, gentle, jazz, heavy bass. 8. Seven backlight color 9. Size: 89*30*21mm weight: 25g 10. Color(optional): red, blue, silver, yellow Trademark: sunny Model: sm138 Standard: 128mb--8gb Productivity: 100k/mo Unit price/payment: t/t