Sunpentown Penguin Ultrasonic Humidifier, Multi Adorable penguin-shaped humidifier with ultrasonic (no heat) humidity Designed for rooms up to 450 square feet; adjustable mist intensity 1-gallon tank capacity; humidity output of up to 7-1/2 liters per day Silent operation; no-slip feet; auto shut-off protection; ETL approved Measures 10 by 11 by 10-1/4 inches; 1-year limited warranty