Perfect for small rooms. Up to 28 hours of operation on 1 filling. Design is sleek and compact for added convenience. Humidifier will run for several nights on only 1 filling. Patented impeller disk evenly disperses a consistent mist output, with no spitting or wetting. Clean, continuous mist output. Dimensions: 11.2" H. x 7.75" W. x 12.90" D. White.