This humidifier has an application that can be downloaded to a mobile phone and can control the mist volume, sleep mode, and support 2, 4, or 8 hour timing. It also has a built-in automatic power shut-off when there is no more water in the tank or when the top cover is opened. There is no need to remove the leak-proof water tank to refill - simply pull up the cover and directly add water through the 7" opening. In addition, this also functions as a diffuser by adding essential oils (not included).