Humidify up to a 325 sq ft room with the Ultrasonic Cool Mist Pediatric Humidifier. The kid-friendly unit will operate for 10-12 hours, has adjustable mist output, and a safety auto-shutoff feature that activates when the water tank is empty. The silent operation of the humidifier is designed to increase the moisture in the air to assist in respiratory relief associated with cold symptoms, sinus irritation, dry coughs, and other respiratory distress symptoms. Provides moisture in the assistance of respiratory relief that is often associated with dry coughs, sinus irritations, cold symptoms, and other concerns in the relief of respiratory distress|Whisper quiet operation, and a child friendly design are ideal for young children|Operating for up to 10-12 hours, the cool mist humidifier has a safety auto-shutoff feature when tank is empty