-Hot plug and play mp3 player without LCD display
Black -With built-in flash memory
Silver -Can play mp3/WMA format
Blue -USB 2.0 high speed
Green -With lithium battery
Red -MP3 decode :8kbps~320kbps
-WMA decode: 64kbps~320kbps
-Earphone output : 5mW + 5mW