... 3)Portable,free angle use,great materia Mini USB fan with the metal caseFeatures1.2300RPM speed,96mm blade diameter, new DC brushless ... , energy saving. 4.Fan's life can be 25000~30000 hours, can be used continuously with long time. 5.Fashional and novel shape ... small room, stable structure, easy to place. 9.Appearance exquisite, can be used in any occasion. 10.Sofe wind, cool and ...