Functions A well Design Decoration to match your living space. Night Light/Background Light Comes in Choices of 7 Colours To select. Works best with essential oil. An Ultrasonic Humidifier emits a cool mist. 3 in 1 Function can be used as humidification, aroma diffusion and air purification. Can be used as sterilizer by dropping some alcohol or vinegar. Low Power Consumption Use Only 12W of Power