... 3.Powerful wind,noiseless 4.Plug-and-play USB Fan 1.2300PRM speed,96mm blade diameter, new DC ... hours, can be used continuously with long time 5.Fan occupies small room, stable structure, easy to place 6 ... ,cool and refreshing ,comfortable. Specification of the USB fan ModelLileng-815MaterialMetalCertificatesCE,FCCColorblue,white,blackPower&Voltage2.1W/5VCurrent420mASpeed2300RPMPackageColor box+outer ...