This Zag diffuser is super easy to use. Just fill with clean room temperature water. Add in three to five drops of your chosen essential oil. Replace the cover and turn on for a misting sensation, unlike any other. 12 watts. Water capacity is 80 ML. Operating time is up to four hours. The light affects include, no light, color changing, fixed color. Dimensions are 4..1 inches by 6.1 inches. Equipped with auto on & off. Cover 200 square feet. New. Non smoking pet free home.