... speakers 1.Factory direct 2.Built-in rechargeable li-on battery 3.Support TF card and USB flash disk Mini computer ... Red, OrangeConfigurations:1 Mini USB port2 On/off power switch3 Power indicatorTechinical Data:Rated power: 2WMaximax power: 2.2WSNR: more than 85dBFrequency ... function:1, excellent tone quality,with wallyson dual channel stereo.2, USB power supply.3, It is convenient for your travel , ...