The Aroma Diffuser features 7-Color Changing LED Lamps and Mist Mode Adjustment. It increases air moisture for easier breathing and relief of cough, cold and flu symptoms, including nasal congestion, dry cough, sinus irritation, nose bleeds, as well as dry skin. Use aromatherapy scented essential oils in the diffuser for instant relaxation. Color changing LED lights also defines the moods. Negative ions increase the flow of oxygen, promoting overall well-being, relieving feelings of stress, ensuring better sleep. Another feature is it reduces the smell of stale cigarette smoke and pet odors.