For an early Christmas present I received a mercury glass and wood Ingeniuso essential oil diffuser! Tired of the $6 plug ins that scent just a small area of the house. This is marvelous, a mere 3 ounces of water and 4 drops of essential oil and the majority of the house is scented with yummy Christmas scents. When the unit is off it is mercury glass color, and when on it cycles thru pink, blue, and green, or you can choose a single color. Features a 1 or 2 hour timer, and unit shuts off automatically when water is gone. Even the next morning you can smell the scent where the diffuser is located. A light cool mist vapor adds scent and moisture to your heated home for comfort. Note: You cannot use fragrance oils in the aromatherapy unit, as they contain damaging chemicals. Essential oils must be used but they are priced the same and come in great scents like lavender, patchouli, pine, spruce, cinnamon, orange, myrrh, frankincense, and premixed flavors of all kinds for stress relief, clear complexion, better sleep, etc. Try Amazon for diffuser/oils and Walmart also sells oils.