Luma Comfort HC12W Cool Mist Vase Humidifier with Adjustable Height and 8 Settings Sleek, modern vase design with adjustable height Effectively humidifies up to 650 sq. ft. 9.5 pint tank provides cool mist for up to 45 hours on a single fill Provides soothing cool moisture to dry environments for easier breathing and a better nights sleep Helps relieve allergy, cold and flu symptoms