Up to 90-hour run time on one tank fill 1.32 gallon tank capacity Smart Mist Technology monitors the humidity in the room and adjusts automatically to maintain desired levels Warm or cool humidification in large or small rooms Timer to set a run time of up to 12 hours Silver Clean Technology prevents fungal and mold growth in the water tank On/off soft glow nightlight is perfect for kids Indicator light lets you know when it's time to refill the tank Extended Reach Wands provided for dispersing mist in large rooms