Multifunction: One button color changing LED. Timer mode (1, 3 or 6 hours). Automatically stops if the tank is empty. Ultra-quiet: thanks to ultrasonic technology, ultra-quiet, does not disturb your sleep, work and studies. Not only is it an aroma diffuser/vaporizer and a humidifier, but it can also be used as an air purifier and night light. Long working time: its water tank 400ml capacity can work up to 10 hours of continuous output. To keep the humidity in your room in the long term, you can also turn off the lights and enjoy the pure mist. 7 colors and calm: you can choose from 7 colors and two modes (continuous or changing of color). Each color can be adjusted between light and light. Soothing experience: Electric diffuser converts water and aroma into extremely fine particles/mist. It helps you regain your calm with fresh air, free from work and fatigue.