Give your indoor fountain a more tropical look! It works like a humidifier ... ultrasonic vibrations make the water turn into "cool steam". In addition to providing fog for beauty and atmosphere it is also a wonderful aromatherapy diffuser. Just add a drop or two of scented oil (lavender, eucalyptus etc.) into the water and the fragrance will carry throughout the room. - Fog fills up to a 12" diameter container approx 4"-5" high - 1"x2" - UL listed transformer and instructions included - input voltage 115 VAC 60 HZ - output voltage 36 VAC - output electric current 1.2A - Shuts off automatically when not submerged or when water level gets too low. - 30 day guaranty (Click Merchant link below for full description)