The Honeywell Mini Cool Mist Humidifier provides a soothing, cool mist without taking up too much room. Its compact size makes it ideal for desktops or nightstands, and adds necessary moisture to the air to help ensure proper humidity levels in your home. It includes an essential oil tray (essential oils not included), a large tank opening that makes it easy to fill and clean, no filters to replace, and automatically shuts off when empty.