USB fan for notebook,laptop,PC 1.DC brushless motor 2.Voltage:DC 5V 3.Power:2.5W 4.Ultra mute, ... more enenrgy saving 4 Inch USB mini fan1)Item Number:4A12)Current: ... 5V4)power:2.5+5%W 5)Applicable for:Computer,USB electric appliances6)Economize on energy, environmental protection, low noise, ... , the quality is the first.Please contact me,thanks 4 inch usb desk fan ---4A1