... Air cooler, humidifier, heater and air purifier: 4 in 1. 8.5L Portable Evaporative Air Cooler.1) With Remote Control and Soft Button Switch.2) Air cooler ... , humidifier, heater and air purifier: 4 ... CERTIFICATE ISO9001,CCC,CE ,ROHS APPROVED Portable Evaporative Air Cooling Cooler (CE, Anion, Remote Control)