... cooler 3.Size:15x10x15.5cm,easy to place MOQ:400PCS. 4 inch latest cooling fan(USB port fan)Power source plug: USBMaterial ... running voltage and current, power just 2.1W, energy saving. 4.Fan's life can be 25000~30000 hours, can be ... place. 9.Appearance smart, can be used in any occasion. 10.Sofe wind, cool and refreshing, comfortable. 11.USB plug and ...