Ayarh Humidifier's stylish tower design is not only space saving but also an attractive design to have in the Lounge, Bedroom, Bedside, etc especially with its subtle blue night lamp on. The mist moistens and refreshes the hot and dry air resulting from either summer heat or indoor heating during the cold season. This helps reduce dryness in the eyes, throat and skin. The fine water mist is also known to clear dust, pollen, pet dander, most unpleasant odours, etc from the air. This benefits the respiratory system and general well being. E.g helps ease breathing, relaxing, sleep better, known to provide relief for cough and colds, etc. Large Water Tank size: 700ml. Runs for approx. 6 hours on full tank. Automatically switches off when water runs out. NOTE: This humidifier is NOT SUITABLE FOR USE WITH ANY OILS. Ayarh's Dimensions: Height: 25.7cm, Diameter: 13cm. Includes USA, EU, UK Adaptor and Manual in English.