air cooling fan 1.size:4inch 2.material:ABS&PP 3.fan parameters:5v,2.1W,2300RPM 5.Features:super ... life personal mini USB air cooling fanSpecifications:MaterialABS&PPCertificatesCE,FCC,ROHS(optional)Colorpink,white,black,orange,grey,blue(customized ... its angle can be adjusted up and down by 360°.7.Dimension: 149.73*96.3*146.5mm,weight ... and refreshing, comfortable. personal mini USB air cooling fan