... thin cooling fan,electric cooling fans for boys and girls Power source plug: USBMaterial: MetalMeas(with box): ... generation of DC brushless technique, lower running voltage and current, power just 2.1W, energy saving. ... with long time. 5.Fashional and contracted metal style, noble and elegant. 6.Fan is with control ... switch, its angle can be adjusted up and down by 360°. 7.Dimension(with box): ...