PRODUCT FUNCTION:
Bluetooth music playback. 
Color : Black speakers with RGB lights color changing lights
Battery capacity : 3.7V 600mah
With USB ,TF function , Aux-in
With Line-in function
Handfree call function 
With small hanging rope, can be hanged on bag

SPECIFICATION:
Blurtooth Version 4.2
Bulit-in Battery : 3.7V 600mAh
Transmission Range : 10m
Frequency response: 100Hz-20KHz
Play time :2-3 hours
Out Power :5W φ52
Product Weight : 270g
Product Size : 2.93 *2.95 *3.72 Inch