Optimus U-31002 30-Watt 1.5-Gal. Portable Cool-Mist Ultrasonic Humidifier

• 1.5-gal. (4.2-L) tank capacity; adjustable mist volume control; operates up to 14 hours before requiring refill;• Humidifies up to 600 sq. ft.; 360deg output;• Adds humidity to air to soothe sinuses and relieve dry skin;• Removable, transparent water tank with handle for easy filling;• Water-empty automatic shutoff switch plus refill light for peace of mind;• Whisper-quiet operation; ideal for bedrooms as it won't disturb sleep;• Includes ceramic water filter;