air cooling fan 1.size:4inch 2.material:ABS& ... Features:super quiet, 25000h working life personal mini USB air cooling fanSpecifications:MaterialABS&PPCertificatesCE,FCC,ROHS(optional)Colorpink,white, ... 5(H) mmProduct weight0.144 kgsFeatures:1.2300RPM speed,96mm blade diameter, new DC brushless motor, strong wind, super quiet ... wind, cool and refreshing, comfortable. personal mini USB air cooling fan