Format: MP3, WMA, Etc. 
Display: NO Display 
Plug and play, USB 2.

Multi-languages selection, multi-sound modes
AAA alkaline battery, 6 hours playing time
Long time digital voice recording
Supports firmware upgradeable
No Driver Required, Except Windows 98SE
Flash memory: 128M/256M/512M/1G/2G/4G optional
Approval: CE, FCC, RoHS