Feathers
Super-thin design
Support Micro SD card
Support MP3 and WMA
Built-in memory flash(optional). 
Play time:5 hours
Key-press Volume/ Play/Pause/Previous/Next
16 Level volume control,LED indication light
Battarry:200mAH rechargeable Li-on battery with 3.7v voltage
Speaker Power: THD+N=0.15%  @3.0W
USB2.0 full speed
Frequency response:20HZ-20KHZ
S/N:≥80dB
Dimension size:90 (L)*35 (W)*13 (H)mm
                        
Accessories: earphones, USB cable.