4)Built-in battery

5)USB disk

6)128 / 256 / 512MB /1GB/2GB/4GB/8GB flash memory

7)USB2.0 portable disk, without driver for Windows 2000 or above

8)Support MP3, WMA, WMV, ASF, WAV, AMV. MP3 bit rate: 8 - 320Kbps

9)AMV video playing (AMV tools can convert and compress video format into AMV to replay)

10)Supporting video format including: Windows media files (.wmv / .wma, / .asf), MPEG files (.mpg / .mpeg), quick time files (. mov / .qt), and AVI files (.avi)

11)Digital voice recording, max. 72 hours recording time for 256MB

12)Recording format: WAV, ACT and recording file can be played back in computer

13)Built-in FM radio option, frequency ranged from 87.5MHz - 108M Hz, automatic channel search, can preset 20 sets channel, support FM radio internal recording

14)A-B repeats multiple repeat functions. Loop one, loop all

15)E-book: read. Txt files, photo book, view JPG, BMP files

16)7 effect qualities: normal, DBB, rock, jazz, disc, pop, and classic

17)ID3, can display lyric synchronously when playing a song

18)Programming power off, can preset sleeping mode or low power mode to save power

19)Support multi-language: simplified Chinese, traditional Chinese, English, Spanish, Italian, German, French, Japanese, Korean, Portuguese, Swedish, Czech, Denmark, Polish, Russian and Thai.

20)Firmware can be updated to extend the function

21)System requirement: IBM or Mac Compatible PC or notebook with USB 1.1/2.0Host controller and 300MHz or faster processor, available USB 2.0/1.1 port Microsoft Windows 98SE, Windows ME, Windows 2000 or Windows XP Mac OS 10, Linux 2.4.2