I received this Comforday Aromatherapy Essential Oil Diffuser in exchange for my honest unbiased opinion. I like the color changing lights. It has 4 different time settings. You can choose the length of time you want your oil diffuser to stay on. It has an auto shut off that shuts it down when the water level disappates. It is easy to use. Just fill with water and add a few drops of your favorite essential oil or add a combination of oils. It diffuses a scented mist that fills the room making it a great smell as well as the added qualities from the different oils. Depending on the ones you use some can give you energy while others will relax you.