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;