For a high quality aromatherapy essential oil diffuser,you can benefit a lot from it.In dry weather,it can be a humidifier to release cool mist.When in night,it will become a night light,which can create a cozy and comfortable atmosphere,especially for ones who fears of the darkness.Without doubt the most important function is freshening and cleaning the air.All CAIFEDE aromatherapy diffuser are do well in different functions.