Aroma Diffuser Ultrasonic Atomizer Air Humidifier 7-Colour Night Light 20098 Ultrasonic, air humidifier, aroma diffuser, fragrance light 3.3oz (100ml) water tank, continuously working 4 hours in a single use Three mode of mist and light available Automatic stop without water, safe and reliable Drop in 1-2 drops oil, fragant refresh and enhance memory