Feathers
Portable back-hang design
Support Micro SD card (TF card)
Battarry:150mAH rechargeable Li-on battery with 3.7v voltage. 
Play time 5 hours
Support MP3 and WMA
Key-press Volume Play/Pause/Previous/Next
16 Level volume control,LED indication light
Speaker Power:2*10Mw
Dimension size: 130(L)*140(W)*50(L)mm 
                  
Accessories:packing box,usb cable.