This 200mL large capacity essential oil diffuser is perfect for ultrasonic aromatherapy. Light and fine mist create a realistic 3D flame effect that can be adjusted between a warm yellow flame and cold blue flame. Add 3-5 drops of your favorite essential oils to relieve fatigue, moisturize your skin and ensure a pleasing atmosphere for you to relax. Extremely quiet and no noise in use. Suitable for working, studying or sleeping.Compact and portable. Can be used as air purifier, humidifier or a night light. Perfect for using at home, hotel, school, bedroom, baby room, air conditioned room, dry place. Built in protection chip. It will automatically turn off if water runs out, making it very safe and reliable. Timer function available. You can set it to be off at intervals of 1/3/5 hours. Allow you to rest at ease. Powered by USB cable, which can be directly inserted into the computer USB port or charger plug (excluded). Please do not add water over the max. line. When pouring off the water, please be aware of the charging port.