SERENE HOUSE Ultrasonic Cool Mist Macaron Aromatherapy Diffuser One Size, LIGHT WOOD Details & care An elegant way to fill your living space with the scents you love, this beautifully designed electric aromatherapy diffuser couldn't be easier to use. Simply add water and the essential oil of your choice, then turn it on. The smooth woodgrain diffuser is designed to run 13 hours continuously or up to 26 hours intermittently, transforming your space into a relaxing getaway. 4" full height Uses water and 100% natural essential oil (not included) BPA-free plastic