Signature 4 in 1 air cooler and heater 4 in 1 cooler heater air purifier humidifier remotesoft touch panel control systemthree selections of fan speed water pump circulation system purify and sterilize air by ionizer strong green cellulose cooling pad system removable cooling pad structure easy to clean 3 airflow settings normal nature sleep 8 hours timer design hi tech heating element ptc with 2 power heating option very convenient versatile casters for easy moving