ULTRASONIC COOL MIST TECHNOLOGY: Safely moisturizes the air for up to 25 hours of continuous operation so you can breathe easy and get more restful sleep. Ideal coverage for bedrooms, offices and other medium-sized rooms.IMPROVED FUNCTIONALITY: MistAire Silver includes the same premium components and functionality used throughout the MistAire line, but has been upgraded with sleep-friendly features like quieter beeps when the unit is turned on/off (great for sleeping babies) and a power light that automatically shuts off after 10 seconds (zero emitted light when the nightlight is off).360-DEGREE MIST NOZZLE: Rotating nozzle makes it easy to adjust mist direction and high and low settings speed to fit your comfort level.AUTOMATIC SHUT-OFF: Safely turns humidifier off when water level is low or the water tank is removed.WHAT YOU GET: Humidifier, AC power adapter, disk cleaning brush, user manual, industry-leading 5 Year Warranty, caring customer support 7 days a week, and the peace of mind that comes from a trusted brand with millions of customers worldwide.