Comfortable air not only feels good, but it's also good for you. That's where this humidifier comes in. Engineered by Perfect Aire, this 1.05-gallon top-fill humidifier quietly disperses an ultra-fine, cool mist powered by our exclusive ultrasonic cool mist technology, humidifying medium to large-sized rooms. What does this mean to you? Relief from dry skin and allergy symptoms, plus an extra defense against airborne illnesses. Need more reasons to love this humidifier. This unit features a 7 color nightlight and allows essential oils to be added directly to the tank, just add your favorite scent and let your room fill with soothing scents and smells.