Experience the new shape of water the Lucerna 2 is an ultrasonic humidifier in the Vornado Alchemy lineup that creates a majestic display of mist and light unlike any other humidifier. At 24 hours of runtime on low and 12 hours on high, the Lucerna 2's 1 gallon water tank has the endurance to maintain a comfortable environment. The inspiring tank design and ambient light creates an illuminating experience independent from the humidity with 3 brightness settings to elevate any surrounding. Lucerna Humidification doesn't have to be be humble.