Winix L100 Ultrasonic 1Gallon/4L Cool Mist Humidifier for Large Room and Nurseries, Air Humidifier with Essential Oil Tray, Quiet Operation, Auto Shut-OffAbout this item Up to 40 Hour Runtime: Provides you with a continuous output of mist (1 Gallon) Included Pre Soaked Aroma Pads: Choose between lavender or eucalyptus for relaxing aromatherapy Adjustable Mist Level and Direction: Choose one of five levels of mist to create the perfect mist of your choice Adjustable Nighttime Glow: Ensure a good nights sleep with the lighting level of your choice (100% 50% 20% Off) User Friendly Design: Clean and fill