The GURUNANDA® Globe Diffuser is a large room diffuser. It has the largest water capacity we make. It uses silent, ultrasonic waves to diffuse water with your choice of essential oil or essential oil blend without generating heat so that the quality of the oil properties is neither damaged nor compromised. Simply fill with water and add a few drops of one of your favorite GURUNANDA® Essential Oils. The ultrasonic diffuser creates vibrations that are carried to the surface where oil is floating. The oil floating on the top of the water gets broken down, and then diffused into the air, filling the surrounding space. The silent ultrasonic technology used in GURUNANDA’s diffuser will instantly fill your environment with the stimulating effects of pure essential oils.