Thank you for your custom.Customer care is our top priority. Offer is subject to availability.We promise you won t regret buying it. 1.7 Gallon Tank Capacity Operates up to 12 hours on high Automatic shut off when tank is empty Extremely quiet operation no bubbling or gurgling sounds Variable humidistat and re-fill indicator light moisture output of 3.0 gallons/24 hours NOTE:Please refer to the user manual before use