... fan,powered by USB port or AAA batteries 2.,with on/off switch 3.new design,nip style mini fan 4.soft ... PC USB 5.0V or AAA battery3.Built in ON/OFF switch, easy to use4.Two pcs of soft blades, ... and you can carry it to anywhere.7.With independent key switch, you can use it any time.8.color ... , energy saving.10.OEM available, you can print with your own logo.11.Excelllent workmanship and strict quality ...