led usb fan, 1)Ultra-quiet fan for office 2)Fan Colors optional 3)Portable,free ... mini fan ,hot sale office mini USB fan ,1)Ultra-quiet fan for office 2)Fan Colors optional 3)Portable,free ... speed,96mm blade diameter, new DC brushless motor, strong wind, super quiet. 2.5V USB(cable length:1.2m) power supply,plug ...