air cooling fan 1.size:4inch 2.material:ABS&PP 3 ... Features:super quiet, 25000h working life personal mini USB air cooling fanSpecifications:MaterialABS&PPCertificatesCE,FCC,ROHS(optional)Colorpink,white,black,orange ... .2.5V USB(cable length:1.2m) power supply, plastic shell, special mesh enclosure design, all has been done ... Sofe wind, cool and refreshing, comfortable. personal mini USB air cooling fan