Optimus U-31001 1.5-Gallon Cool Mist Ultrasonic Humidifier
Operates up to 18 hours
Water-empty auto shutoff switch and refill light
Adjustable mist volume control
Easy-to-fill transparent water tank
Whisper-quiet operation
Removable tank with handle for easy filling
Moisture output more than 230mL/hour
cETLus approval