*Release a large number of negative ions *High efficiency air purification *Improve air quality *Care for health *Double nozzle Technical Specification Type of humidifier:Ultrasonic cool mist Power consumption:220V~240V,50Hz-60Hz,27Watt Capacity of tank:1Gallon / BLliter Running time per tank:11 hours Output per 24 hours:2.1 Gallon/BLliter Suitable room size:approx.500sq.ft/48m2 Already tested before shipment. After receiving the goods, if there are any problems.Please contact our customer service Thank you for your support and understanding. 1 x BW307 Air Humidifier