... )Portable,free angle use,great materia Mini USB fan with the metal caseFeatures1.2300RPM speed,96mm blade diameter, new DC brushless motor, strong ... .1W, energy saving. 4.Fan's life can be 25000~30000 hours, can be used continuously with long time. 5.Fashional and novel shape, noble ... and elegant. 6.Fan is with control switch, its angle can be adjusted up and down by 360°. 7.Dimension ...