The PureGuardian10-Hour Ultrasonic Humidifier helps to keep the air fresh and moist in a room. Made from ABS plastic, the humidifier features a space-efficient design and offer excellent built quality. It features low and high mist settings. This humidifier has a water tank of 0.21 gallons and produces moisture of up to one gallon each day. The 10-Hour Ultrasonic Humidifier by pureguardian is also helpful as it may offer relief from nasal congestion, dry cough, dry skin, and sinus irritation. It consumes minimal power and lets you know when the tank needs to be refilled. This humidifier has excellent portability and is perfect for use when travelling.