1,unique design, wind, and low noise, 2.Aluminum metal blade. 3,Fluctuation adjust Angle,super silent. super-silent mini USB ... .more colour, more choice.7.can be used as cooling fan for various computers and electronical equipment. or as househole mini ... fan. FAN SIZE:149.73*93.3*146.5mmWEIGHT :250gPOWER: DC 5 ...