The Honeywell Ultra Glow Light Changing Humidifier and Diffuser fills your air with refreshing moisture to help relieve dry air discomforts and also lets you relax and enjoy your favorite essential oils. During cold and flu season, or when the air is simply just dry, you can rely on this small humidifier for your entire family. It also offers calming essential oils two ways: you can add essential oils directly to the water tank, or use the oil tray for a more subtle fragrance experience. Essential oils not included. The calming ambiance gets even better with the glowing, color changing lights. Honeywell humidifiers for bedroom and beyond add necessary moisture to the air, and help ensure proper humidity levels in your home. Indoor humidity levels between 40-60% can help relieve cough and congestion, keep throat and nasal passages hydrated, temporarily relieve dry air discomfort, protect furniture, reduce static electricity and even keep plants healthier. This Honeywell humidifier and diffuser is a cool mist humidifier, and produces a fine, visible cool mist with a directional mist outlet. It has no filter to change, a quiet operation, adjustable mist control and a directional mist outlet to let you customize the moisture level in the air, making it a great choice for your family, even as a kids or baby humidifier. Plus, it has a wide tank opening that makes it easy to fill and clean, no filters to replace and it automatically shuts off when empty. It features an up to 24 hour run time.