... .Built-in rechargeable li-on battery 3.Support TF card and USB flash disk Smart mini speakerDetail products descriptionMain Features1 ... USB wireColors AvailableGreen, Blue, Red, OrangeConfigurations:1 Mini USB port2 On/off power switch3 Power indicatorTechinical Data:Rated power: ... is convenient for your travel ,portable, super slim and mini size, easy to carry4, Material: Pure ABS+ metal ...