Breathe easier with the Air Innovations Ultrasonic Cool Mist Digital Smart Humidifier - Model 602. For its size, it runs longer and it's more versatile than any other humidifier on the market. This fully featured unit has a 1.6 gallon tank the runs up to 80 hours on low - that's 10 nights of sleep before you have to refill it. The operation of this humidifier is silent for a peaceful night of sleep, yet it's powerful enough to add humidity to large rooms up to 500 sq. ft. Other features include: the entire tank and base are made of antimicrobial plastic to help prevent mildew, mold and bacteria growth, built-in programmable humidistat that monitors and maintains the humidity levels that you set, a permanent ceramic filter that traps impurities from water, and a dual directional mist nozzle to point the mist where you want it. Color: Multi.