The Air Innovations model 801B ultrasonic, cool mist, dual tank smart humidifier is one of the top rated, longest running, and most versatile humidifiers available for its size. Key Features: 2.15 gallon tanks that runs for a full 120 hrs. on low (15 nights of sleep) and is completely silent when running. Powerful enough to add humidity to large and extra-large rooms up to 700 Sq. ft., with a programmable built in humidistat that monitors and maintains the humidity level you set. The entire unit and base are made of antimicrobial plastic to prevent bacteria, mold, and mildew growth and it comes with a permanent ceramic filter to help trap impurities in your water. Unlike Vicks, Crane and Essic humidifiers, it also features a 15” extension nozzle so it can convert from a table top unit to a floor humidifier in seconds and has a small foot print of only 10” across by 16” high. A 360-degree rotating mist nozzle helps direct the moisture where you want it. And it features a remote control.