... competitive price&capacity super thin cooling fan,electric cooling fans for boys and girls Power source plug: USBMaterial: MetalMeas(with box): ... be used continuously with long time. 5.Fashional and contracted metal style, noble and elegant. 6.Fan is with control switch, ... Sofe wind, cool and refreshing, comfortable. 11.USB plug and play,no external power needed,USB power adapter required for the 5V .. ...