USB rechargeable double-head fan Portable fan with separate control of two-way air supply

Good luck with your favorite purchasesHigh-concerned chemical : None Power Source : Lithium Battery Model Number : S30 Power Source : Battery Fan Speed : Third Gear Controlling Mode : Mechanical Timer Control Certification : CE,EMC,RoHS Installation : Table Type : Cooling Only Wind Type : Natural Wind, Sleep Wind, Prevailing Wind Air supply mode : Rotary Vane Power (W) : 9w Timing Function : No Timing Remote Control Function : No Brand Name : NoEnName_Null Origin : Mainland China Voltage : 5v Color : white,purple