MP3 feature(model:mp3-403):

1. Support MP3, WMA audio files.
2. Built in FM radio (optional)
3. 7 Colours LCD background light, you can use the player in dark by it
3. Lyric and text sound word display at the same
4. Recording/reply to read, digital record function (256Mmemory,record about 72 hours and record(vox)
5. Upgrade firmware of the product function
6. Blanced machine in 7 kinds of tone colour, normal , rock, pop, classic, soft, jazz, bass
7. Turn off the player timely, you can set sleeping mode and saving electricity mode, from which you can use as easily as possible
8. Windows 98/ME/2000/XP(Windows ME/2000/XP , over WIN 98 need not driver )
9. connect from USB to USB.
10.Use AAA battery
11.Colour: Red,Blue,Black,Silver

MP4 feature(mp4-p3):

1) 1.8" TFT screen 260000 pixels
2) Supporting MTV and short movie display
3) E-book reading (96 x 64)
4) Self-defining greeting
5) Support ID3 function
6) Browsing pictures (JPEG form)
7) 6 EQs
8) USB flash disk function
9) Line-in and MIC recording
10) Disk partition and password setting
11) FM radio build-in
Specifications:
1) Storage capacity: 128MB, 256MB, 512MB, 1GB, 2GB,4GB
2) USB interface 2.0
3) Icon menu
4) WMA, MP3, WMV, WAV, ASF support
5) Lithium rechargeable battery built inside
6) No less than 10 hours playing time continuously
Technical data:
1) Max output power: 15mW + 15mW
2) SNR: 85dB
3) Key stoke: power on/off, playing, forward
4) Backward, A-B repeat, recording
5) Frequency response: 20Hz - 20kHz (less info)