SPT Pig Ultrasonic Humidifier, Multi Cool mist ultrasonic technology, High humidity output Silent operation, Adjustable mist intensity, 1. 8-liter tank capacity, Designed for rooms up to 450 square feet Moisture output up to 220ml per hour, Operates up to 18 hours per filling Auto shut-off protection ultrasonic generator only fan will continue to run No-slip feet, Adorable design, ETL