This humidifer offers up to 30 hours of continuous humidification with its top-fill design. It covers up to 300 sq ft, releasing a cool mist at 250ml/hr with a 360° rotating nozzle. Utilizing Ultrasonic Technology, it emits a fine 5μm mist for even room coverage. Price drops from $49.99 to $29.94. Shipping is free with prime.