... control,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 ... ,cool and refreshing ,comfortable. Specification of the USB fan ModelLileng-815MaterialMetalCertificatesCE,FCCColorblue,white,blackPower&Voltage2.1W/5VCurrent420mASpeed2300RPMPackageColor box+ ...