Portabble air conditioning fan has humidifier/purifier/anion/fan function Strong wind Adopt honeycomb evaperation cooling tec Specification of evaporative air cooler : ... in hot summer or cold winter,cool or warm air for your option.Have overheating protection ,safety and reliability ... environment 8.It has multi-function such as air anion ,air humidifition , air purifition ,warming ,cooling9.0.5 to 7. ...