Mini USB fan with the metal case 1)Ultra-quiet fan for office 2) ... 3)Portable,free angle use,great materia Mini USB fan with the metal caseFeatures1.2300RPM speed,96mm blade diameter, new DC brushless ... play,plastic shell, special mesh enclosure design, all has been done by exquisite processing, safe. 3.New generation of DC brushless ... 2.1±0.25WCable length: 1.2MPictures Mini USB fan with the metal case