Optimus 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;