Tabletop design of the humidifier requires little space so you can place it anywhere Variable rotary switch for simple, easy control The ambient lighting and nightlight features create a nice atmosphere and are great for kids' rooms Includes an auto-shutoff feature when the tank is empty so it's not wasting energy Removable tank with large opening makes it easy to refill as well as clean Provides up to 15 hours of continuous runtime so you can keep it going when you're at home and shut it off when it's time for work or school 1.1 gallon tank capacity