The diffuser produces vibrations at a frequency of 2.4 million times per second, dissolving water and essential oils into extremely fine particles without using heat (heat alters and destroys the properties of essential oils). The characteristic ULTRASONIC diffusion ensures the integrity of the beneficial molecular structure of the essential oils and allows for easy absorption by the body. Large 500 ml water capacity that can continue to be used for up to 18 hours each time. When the time is increased or there is no water, it will automatically turn off. Press the "Mist" button, select the timer from 60 minutes, 120 minutes, 180 minutes, or ON. Improve air quality and avoid allergens and unpleasant odors such as smoke. It functions as an ionizer, releasing negative ions into the air that combat harmful positive ions. This provides many health benefits, such as improving breathing, enhancing the immune system, contributing to mood enhancement, and relieving stress. It helps clean and moisturize the air and improves the quality of the air we breathe. The unit can also be used as a humidifier without aromatherapy. It provides moisture for dry cough and dry skin.