Keep the air comfortable all year with this 6-liter ultrasonic cool and warm mist humidifier built for bedrooms, baby nurseries, large rooms up to 500 square feet, and indoor plants. The large top-fill tank runs up to 75 hours per fill, while smart auto mode uses a built-in humidistat to monitor and adjust humidity automatically. Switch to warm mist in winter for cold and congestion relief or cool mist in summer for soothing humidity. Whisper-quiet operation under 28 decibels protects your sleep, and a built-in aromatherapy oil tray, color-changing nightlight, remote control, programmable timer, and low-water auto shutoff make it easy and safe to use every day.