Office Mini Usb Fan 1.DC brushless motor 2. ... .Ultra-thin design,dexterity,easy to carry Office Mini Usb Fan1.DC brushless motor 2.Voltage:DC 5V ... design,dexterity,easy to carry5.Ultra-quiet fan for office, home 6.Portable,free angle use,great ... motor, strong wind, super quiet. 2.5V USB(cable length:1.2m) power supply,plug and play ... Sofe wind, cool and refreshing, comfortable. Office Mini Usb Fan