Using Dyson’s patented Ultraviolet Cleanse:trade_mark: technology, the Dyson humidifier kills 99.9% of bacteria before distributing up to 300ml of clean mist evenly around the room each hour. Every drop of water is exposed to an ultraviolet light, twice, to kill nasty bacteria. A piezoelectric transducer in the base of the machine, vibrating up to 1.7 million times a second, breaks the water down into microscopic particles, which are drawn up through the loop amplifier and projected through the air using Air Multiplier:trade_mark: technology. Find out more at: https://www.dyson.com/fans-and-heaters/humidifiers http://www.youtube.com/dysonus https://www.facebook.com/dyson https://twitter.com/Dyson