... .Ultra-quiet,competitive price&capacity super thin cooling fan,electric cooling fans for boys and girls Power source plug: USBMaterial: MetalMeas(with ... brushless technique, lower running voltage and current, power just 2.1W, energy saving. 4.Fan's life can be 25000~30000 ... continuously with long time. 5.Fashional and contracted metal style, noble and elegant. 6.Fan is with control switch, its angle ...