Moisturize dry air with this handy Mainstays Ultrasonic Humidifier. This powerful and aesthetically pleasing humidifier is packed with smart features. The portable humidifier easily attaches to a 0.5-0.8L bottle size and provides up to five hours of continuous, safe operation. It has an empty tank indicator for added safety and convenience. Additional features include an adjustable mist nozzle with adjustable mist output and a mechanical control for ease of use. The ideal solution for relieving the symptoms associated with dry air, this easy-to-transport, travel-size tabletop humidifier is compatible with most available drinking water bottles.