Mini USB fan with the metal case 1)Ultra-quiet fan for ... Portable,free angle use,great materia Mini USB fan with the metal caseFeatures1.2300RPM speed,96mm blade diameter, new DC ... been done by exquisite processing, safe. 3.New generation of DC brushless technique, lower running voltage and current, power ... down by 360°. 7.Dimension: 149.*96.3*147mm,weight: 144g ,easy to carry. 8.Fan occupies small room ...